[SystemZ] Use fneg in test cases

Now that we have fneg, prefer using it over "fsub -0.0, ...".
This helps in particular with strict FP tests, as fneg does
not raise any exceptions.

22 files changed, 88 insertions, 98 deletions

diff --git a/llvm/test/CodeGen/SystemZ/fp-abs-02.ll b/llvm/test/CodeGen/SystemZ/fp-abs-02.ll
index 2c70ca7dca1..48be0498043 100644
--- a/llvm/test/CodeGen/SystemZ/fp-abs-02.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-abs-02.ll
@@ -10,7 +10,7 @@ define float @f1(float %f) {
 ; CHECK: lndfr %f0, %f0
 ; CHECK: br %r14
   %abs = call float @llvm.fabs.f32(float %f)
-  %res = fsub float -0.0, %abs
+  %res = fneg float %abs
   ret float %res
 }
 
@@ -21,7 +21,7 @@ define double @f2(double %f) {
 ; CHECK: lndfr %f0, %f0
 ; CHECK: br %r14
   %abs = call double @llvm.fabs.f64(double %f)
-  %res = fsub double -0.0, %abs
+  %res = fneg double %abs
   ret double %res
 }
 
@@ -36,7 +36,7 @@ define void @f3(fp128 *%ptr, fp128 *%ptr2) {
 ; CHECK: br %r14
   %orig = load fp128, fp128 *%ptr
   %abs = call fp128 @llvm.fabs.f128(fp128 %orig)
-  %negabs = fsub fp128 0xL00000000000000008000000000000000, %abs
+  %negabs = fneg fp128 %abs
   %op2 = load fp128, fp128 *%ptr2
   %res = fdiv fp128 %negabs, %op2
   store fp128 %res, fp128 *%ptr
diff --git a/llvm/test/CodeGen/SystemZ/fp-abs-04.ll b/llvm/test/CodeGen/SystemZ/fp-abs-04.ll
index 5676429d433..6ec22292fb2 100644
--- a/llvm/test/CodeGen/SystemZ/fp-abs-04.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-abs-04.ll
@@ -9,7 +9,7 @@ define float @f1(float %f) {
 ; CHECK: lndfr %f0, %f0
 ; CHECK: br %r14
   %abs = call float @llvm.fabs.f32(float %f)
-  %res = fsub float -0.0, %abs
+  %res = fneg float %abs
   ret float %res
 }
 
@@ -20,7 +20,7 @@ define double @f2(double %f) {
 ; CHECK: lndfr %f0, %f0
 ; CHECK: br %r14
   %abs = call double @llvm.fabs.f64(double %f)
-  %res = fsub double -0.0, %abs
+  %res = fneg double %abs
   ret double %res
 }
 
@@ -38,7 +38,7 @@ define void @f3(fp128 *%ptr, fp128 *%ptr2) {
 ; CHECK: br %r14
   %orig = load fp128, fp128 *%ptr
   %abs = call fp128 @llvm.fabs.f128(fp128 %orig)
-  %negabs = fsub fp128 0xL00000000000000008000000000000000, %abs
+  %negabs = fneg fp128 %abs
   %op2 = load fp128, fp128 *%ptr2
   %res = fdiv fp128 %negabs, %op2
   store fp128 %res, fp128 *%ptr
diff --git a/llvm/test/CodeGen/SystemZ/fp-cmp-04.ll b/llvm/test/CodeGen/SystemZ/fp-cmp-04.ll
index 1e5e59eb659..23ff1b7da28 100644
--- a/llvm/test/CodeGen/SystemZ/fp-cmp-04.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-cmp-04.ll
@@ -128,7 +128,7 @@ define float @f7(float %dummy, float %a, float *%dest) {
 ; CHECK: br %r14
 entry:
   %abs = call float @llvm.fabs.f32(float %a)
-  %res = fsub float -0.0, %abs
+  %res = fneg float %abs
   %cmp = fcmp olt float %res, 0.0
   br i1 %cmp, label %exit, label %store
 
@@ -147,7 +147,7 @@ define float @f8(float %dummy, float %a, float *%dest) {
 ; CHECK-NEXT: bler %r14
 ; CHECK: br %r14
 entry:
-  %res = fsub float -0.0, %a
+  %res = fneg float %a
   %cmp = fcmp ole float %res, 0.0
   br i1 %cmp, label %exit, label %store
 
@@ -375,7 +375,7 @@ define float @f18(float %dummy, float %a, float *%dest) {
 ; CHECK: br %r14
 entry:
   %abs = call float @llvm.fabs.f32(float %a)
-  %res = fsub float -0.0, %abs
+  %res = fneg float %abs
   %cmp = fcmp ogt float %abs, 0.0
   br i1 %cmp, label %exit, label %store
 
@@ -394,7 +394,7 @@ define float @f19(float %dummy, float %a, float *%dest) {
 ; CHECK-NEXT: bler %r14
 ; CHECK: br %r14
 entry:
-  %res = fsub float -0.0, %a
+  %res = fneg float %a
   %cmp = fcmp oge float %a, 0.0
   br i1 %cmp, label %exit, label %store
 
diff --git a/llvm/test/CodeGen/SystemZ/fp-cmp-05.ll b/llvm/test/CodeGen/SystemZ/fp-cmp-05.ll
index d25c8e78cc3..a8580db4167 100644
--- a/llvm/test/CodeGen/SystemZ/fp-cmp-05.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-cmp-05.ll
@@ -11,7 +11,7 @@ define float @f1(float %a, float %b, float %f) {
 ; CHECK-LABEL: f1:
 ; CHECK: ltebr
 ; CHECK-NEXT: ber %r14
-  %neg = fsub float -0.0, %f
+  %neg = fneg float %f
   %cond = fcmp oeq float %neg, 0.0
   %res = select i1 %cond, float %a, float %b
   ret float %res
@@ -22,7 +22,7 @@ define double @f2(double %a, double %b, double %f) {
 ; CHECK-LABEL: f2:
 ; CHECK: ltdbr
 ; CHECK-NEXT: ber %r14
-  %neg = fsub double -0.0, %f
+  %neg = fneg double %f
   %cond = fcmp oeq double %neg, 0.0
   %res = select i1 %cond, double %a, double %b
   ret double %res
@@ -36,7 +36,7 @@ define float @f3(float %a, float %b, float %f) {
 ; CHECK: lpebr
 ; CHECK-NEXT: ber %r14
   %abs = call float @llvm.fabs.f32(float %f)
-  %neg = fsub float -0.0, %abs
+  %neg = fneg float %abs
   %cond = fcmp oeq float %neg, 0.0
   %res = select i1 %cond, float %a, float %b
   ret float %res
@@ -49,7 +49,7 @@ define double @f4(double %a, double %b, double %f) {
 ; CHECK: lpdbr
 ; CHECK-NEXT: ber %r14
   %abs = call double @llvm.fabs.f64(double %f)
-  %neg = fsub double -0.0, %abs
+  %neg = fneg double %abs
   %cond = fcmp oeq double %neg, 0.0
   %res = select i1 %cond, double %a, double %b
   ret double %res
diff --git a/llvm/test/CodeGen/SystemZ/fp-mul-08.ll b/llvm/test/CodeGen/SystemZ/fp-mul-08.ll
index 83f198b5894..2aeaefc787a 100644
--- a/llvm/test/CodeGen/SystemZ/fp-mul-08.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-mul-08.ll
@@ -11,7 +11,7 @@ define float @f1(float %f1, float %f2, float %acc) {
 ; CHECK-SCALAR: ler %f0, %f4
 ; CHECK-VECTOR: wfmssb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -23,7 +23,7 @@ define float @f2(float %f1, float *%ptr, float %acc) {
 ; CHECK-VECTOR: ldr %f0, %f2
 ; CHECK: br %r14
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -36,7 +36,7 @@ define float @f3(float %f1, float *%base, float %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 1023
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -53,7 +53,7 @@ define float @f4(float %f1, float *%base, float %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 1024
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -70,7 +70,7 @@ define float @f5(float %f1, float *%base, float %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 -1
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -84,7 +84,7 @@ define float @f6(float %f1, float *%base, i64 %index, float %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 %index
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -99,7 +99,7 @@ define float @f7(float %f1, float *%base, i64 %index, float %acc) {
   %index2 = add i64 %index, 1023
   %ptr = getelementptr float, float *%base, i64 %index2
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
@@ -115,7 +115,7 @@ define float @f8(float %f1, float *%base, i64 %index, float %acc) {
   %index2 = add i64 %index, 1024
   %ptr = getelementptr float, float *%base, i64 %index2
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
   ret float %res
 }
diff --git a/llvm/test/CodeGen/SystemZ/fp-mul-09.ll b/llvm/test/CodeGen/SystemZ/fp-mul-09.ll
index c66ab2f7c42..2ad593517c7 100644
--- a/llvm/test/CodeGen/SystemZ/fp-mul-09.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-mul-09.ll
@@ -11,7 +11,7 @@ define double @f1(double %f1, double %f2, double %acc) {
 ; CHECK-SCALAR: ldr %f0, %f4
 ; CHECK-VECTOR: wfmsdb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -22,7 +22,7 @@ define double @f2(double %f1, double *%ptr, double %acc) {
 ; CHECK: ldr %f0, %f2
 ; CHECK: br %r14
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -34,7 +34,7 @@ define double @f3(double %f1, double *%base, double %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 511
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -50,7 +50,7 @@ define double @f4(double %f1, double *%base, double %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 512
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -66,7 +66,7 @@ define double @f5(double %f1, double *%base, double %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 -1
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -79,7 +79,7 @@ define double @f6(double %f1, double *%base, i64 %index, double %acc) {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 %index
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -93,7 +93,7 @@ define double @f7(double %f1, double *%base, i64 %index, double %acc) {
   %index2 = add i64 %index, 511
   %ptr = getelementptr double, double *%base, i64 %index2
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
@@ -108,7 +108,7 @@ define double @f8(double %f1, double *%base, i64 %index, double %acc) {
   %index2 = add i64 %index, 512
   %ptr = getelementptr double, double *%base, i64 %index2
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
   ret double %res
 }
diff --git a/llvm/test/CodeGen/SystemZ/fp-mul-10.ll b/llvm/test/CodeGen/SystemZ/fp-mul-10.ll
index c23a6a202ad..669ccbacf78 100644
--- a/llvm/test/CodeGen/SystemZ/fp-mul-10.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-mul-10.ll
@@ -8,7 +8,7 @@ define double @f1(double %f1, double %f2, double %acc) {
 ; CHECK: wfnmadb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %acc)
-  %negres = fsub double -0.0, %res
+  %negres = fneg double %res
   ret double %negres
 }
 
@@ -16,9 +16,9 @@ define double @f2(double %f1, double %f2, double %acc) {
 ; CHECK-LABEL: f2:
 ; CHECK: wfnmsdb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.fma.f64 (double %f1, double %f2, double %negacc)
-  %negres = fsub double -0.0, %res
+  %negres = fneg double %res
   ret double %negres
 }
 
@@ -27,7 +27,7 @@ define float @f3(float %f1, float %f2, float %acc) {
 ; CHECK: wfnmasb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %acc)
-  %negres = fsub float -0.0, %res
+  %negres = fneg float %res
   ret float %negres
 }
 
@@ -35,9 +35,9 @@ define float @f4(float %f1, float %f2, float %acc) {
 ; CHECK-LABEL: f4:
 ; CHECK: wfnmssb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.fma.f32 (float %f1, float %f2, float %negacc)
-  %negres = fsub float -0.0, %res
+  %negres = fneg float %res
   ret float %negres
 }
 
diff --git a/llvm/test/CodeGen/SystemZ/fp-neg-01.ll b/llvm/test/CodeGen/SystemZ/fp-neg-01.ll
index 679dd7188c4..ff3a98231a6 100644
--- a/llvm/test/CodeGen/SystemZ/fp-neg-01.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-neg-01.ll
@@ -8,7 +8,7 @@ define float @f1(float %f) {
 ; CHECK-LABEL: f1:
 ; CHECK: lcdfr %f0, %f0
 ; CHECK: br %r14
-  %res = fsub float -0.0, %f
+  %res = fneg float %f
   ret float %res
 }
 
@@ -17,7 +17,7 @@ define double @f2(double %f) {
 ; CHECK-LABEL: f2:
 ; CHECK: lcdfr %f0, %f0
 ; CHECK: br %r14
-  %res = fsub double -0.0, %f
+  %res = fneg double %f
   ret double %res
 }
 
@@ -31,7 +31,7 @@ define void @f3(fp128 *%ptr, fp128 *%ptr2) {
 ; CHECK: br %r14
   %orig = load fp128, fp128 *%ptr
   %negzero = fpext float -0.0 to fp128
-  %neg = fsub fp128 0xL00000000000000008000000000000000, %orig
+  %neg = fneg fp128 %orig
   %op2 = load fp128, fp128 *%ptr2
   %res = fdiv fp128 %neg, %op2
   store fp128 %res, fp128 *%ptr
diff --git a/llvm/test/CodeGen/SystemZ/fp-neg-02.ll b/llvm/test/CodeGen/SystemZ/fp-neg-02.ll
index a721b837dca..70ff19c8002 100644
--- a/llvm/test/CodeGen/SystemZ/fp-neg-02.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-neg-02.ll
@@ -7,7 +7,7 @@ define float @f1(float %f) {
 ; CHECK-LABEL: f1:
 ; CHECK: lcdfr %f0, %f0
 ; CHECK: br %r14
-  %res = fsub float -0.0, %f
+  %res = fneg float %f
   ret float %res
 }
 
@@ -16,7 +16,7 @@ define double @f2(double %f) {
 ; CHECK-LABEL: f2:
 ; CHECK: lcdfr %f0, %f0
 ; CHECK: br %r14
-  %res = fsub double -0.0, %f
+  %res = fneg double %f
   ret double %res
 }
 
@@ -33,7 +33,7 @@ define void @f3(fp128 *%ptr, fp128 *%ptr2) {
 ; CHECK: br %r14
   %orig = load fp128, fp128 *%ptr
   %negzero = fpext float -0.0 to fp128
-  %neg = fsub fp128 0xL00000000000000008000000000000000, %orig
+  %neg = fneg fp128 %orig
   %op2 = load fp128, fp128 *%ptr2
   %res = fdiv fp128 %neg, %op2
   store fp128 %res, fp128 *%ptr
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-mul-08.ll b/llvm/test/CodeGen/SystemZ/fp-strict-mul-08.ll
index 4c5101a795c..a9219114256 100644
--- a/llvm/test/CodeGen/SystemZ/fp-strict-mul-08.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-mul-08.ll
@@ -11,7 +11,7 @@ define float @f1(float %f1, float %f2, float %acc) #0 {
 ; CHECK-SCALAR: ler %f0, %f4
 ; CHECK-VECTOR: wfmssb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -26,7 +26,7 @@ define float @f2(float %f1, float *%ptr, float %acc) #0 {
 ; CHECK-VECTOR: ldr %f0, %f2
 ; CHECK: br %r14
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -42,7 +42,7 @@ define float @f3(float %f1, float *%base, float %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 1023
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -62,7 +62,7 @@ define float @f4(float %f1, float *%base, float %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 1024
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -82,7 +82,7 @@ define float @f5(float %f1, float *%base, float %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 -1
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -99,7 +99,7 @@ define float @f6(float %f1, float *%base, i64 %index, float %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr float, float *%base, i64 %index
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -117,7 +117,7 @@ define float @f7(float %f1, float *%base, i64 %index, float %acc) #0 {
   %index2 = add i64 %index, 1023
   %ptr = getelementptr float, float *%base, i64 %index2
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
@@ -136,7 +136,7 @@ define float @f8(float %f1, float *%base, i64 %index, float %acc) #0 {
   %index2 = add i64 %index, 1024
   %ptr = getelementptr float, float *%base, i64 %index2
   %f2 = load float, float *%ptr
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-mul-09.ll b/llvm/test/CodeGen/SystemZ/fp-strict-mul-09.ll
index 357148c3b01..ffa7ea8235e 100644
--- a/llvm/test/CodeGen/SystemZ/fp-strict-mul-09.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-mul-09.ll
@@ -11,7 +11,7 @@ define double @f1(double %f1, double %f2, double %acc) #0 {
 ; CHECK-SCALAR: ldr %f0, %f4
 ; CHECK-VECTOR: wfmsdb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -25,7 +25,7 @@ define double @f2(double %f1, double *%ptr, double %acc) #0 {
 ; CHECK: ldr %f0, %f2
 ; CHECK: br %r14
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -40,7 +40,7 @@ define double @f3(double %f1, double *%base, double %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 511
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -59,7 +59,7 @@ define double @f4(double %f1, double *%base, double %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 512
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -78,7 +78,7 @@ define double @f5(double %f1, double *%base, double %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 -1
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -94,7 +94,7 @@ define double @f6(double %f1, double *%base, i64 %index, double %acc) #0 {
 ; CHECK: br %r14
   %ptr = getelementptr double, double *%base, i64 %index
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -111,7 +111,7 @@ define double @f7(double %f1, double *%base, i64 %index, double %acc) #0 {
   %index2 = add i64 %index, 511
   %ptr = getelementptr double, double *%base, i64 %index2
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
@@ -129,7 +129,7 @@ define double @f8(double %f1, double *%base, i64 %index, double %acc) #0 {
   %index2 = add i64 %index, 512
   %ptr = getelementptr double, double *%base, i64 %index2
   %f2 = load double, double *%ptr
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-mul-10.ll b/llvm/test/CodeGen/SystemZ/fp-strict-mul-10.ll
index a4291ec8d37..f9af9017b02 100644
--- a/llvm/test/CodeGen/SystemZ/fp-strict-mul-10.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-mul-10.ll
@@ -11,7 +11,7 @@ define double @f1(double %f1, double %f2, double %acc) #0 {
                         double %f1, double %f2, double %acc,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negres = fsub double -0.0, %res
+  %negres = fneg double %res
   ret double %negres
 }
 
@@ -19,12 +19,12 @@ define double @f2(double %f1, double %f2, double %acc) #0 {
 ; CHECK-LABEL: f2:
 ; CHECK: wfnmsdb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub double -0.0, %acc
+  %negacc = fneg double %acc
   %res = call double @llvm.experimental.constrained.fma.f64 (
                         double %f1, double %f2, double %negacc,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negres = fsub double -0.0, %res
+  %negres = fneg double %res
   ret double %negres
 }
 
@@ -36,7 +36,7 @@ define float @f3(float %f1, float %f2, float %acc) #0 {
                         float %f1, float %f2, float %acc,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negres = fsub float -0.0, %res
+  %negres = fneg float %res
   ret float %negres
 }
 
@@ -44,12 +44,12 @@ define float @f4(float %f1, float %f2, float %acc) #0 {
 ; CHECK-LABEL: f4:
 ; CHECK: wfnmssb %f0, %f0, %f2, %f4
 ; CHECK: br %r14
-  %negacc = fsub float -0.0, %acc
+  %negacc = fneg float %acc
   %res = call float @llvm.experimental.constrained.fma.f32 (
                         float %f1, float %f2, float %negacc,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negres = fsub float -0.0, %res
+  %negres = fneg float %res
   ret float %negres
 }
 
diff --git a/llvm/test/CodeGen/SystemZ/vec-abs-05.ll b/llvm/test/CodeGen/SystemZ/vec-abs-05.ll
index 63210f87b94..800badd106d 100644
--- a/llvm/test/CodeGen/SystemZ/vec-abs-05.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-abs-05.ll
@@ -20,7 +20,7 @@ define <2 x double> @f2(<2 x double> %val) {
 ; CHECK: vflndb %v24, %v24
 ; CHECK: br %r14
   %abs = call <2 x double> @llvm.fabs.v2f64(<2 x double> %val)
-  %ret = fsub <2 x double> <double -0.0, double -0.0>, %abs
+  %ret = fneg <2 x double> %abs
   ret <2 x double> %ret
 }
 
@@ -41,6 +41,6 @@ define double @f4(<2 x double> %val) {
 ; CHECK: br %r14
   %scalar = extractelement <2 x double> %val, i32 0
   %abs = call double @llvm.fabs.f64(double %scalar)
-  %ret = fsub double -0.0, %abs
+  %ret = fneg double %abs
   ret double %ret
 }
diff --git a/llvm/test/CodeGen/SystemZ/vec-abs-06.ll b/llvm/test/CodeGen/SystemZ/vec-abs-06.ll
index 8eee1d9d250..79c93cc09bd 100644
--- a/llvm/test/CodeGen/SystemZ/vec-abs-06.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-abs-06.ll
@@ -20,8 +20,7 @@ define <4 x float> @f2(<4 x float> %val) {
 ; CHECK: vflnsb %v24, %v24
 ; CHECK: br %r14
   %abs = call <4 x float> @llvm.fabs.v4f32(<4 x float> %val)
-  %ret = fsub <4 x float> <float -0.0, float -0.0,
-                           float -0.0, float -0.0>, %abs
+  %ret = fneg <4 x float> %abs
   ret <4 x float> %ret
 }
 
@@ -42,6 +41,6 @@ define float @f4(<4 x float> %val) {
 ; CHECK: br %r14
   %scalar = extractelement <4 x float> %val, i32 0
   %abs = call float @llvm.fabs.f32(float %scalar)
-  %ret = fsub float -0.0, %abs
+  %ret = fneg float %abs
   ret float %ret
 }
diff --git a/llvm/test/CodeGen/SystemZ/vec-mul-02.ll b/llvm/test/CodeGen/SystemZ/vec-mul-02.ll
index 11a651e4997..a4f6775d347 100644
--- a/llvm/test/CodeGen/SystemZ/vec-mul-02.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-mul-02.ll
@@ -55,7 +55,7 @@ define <2 x double> @f5(<2 x double> %dummy, <2 x double> %val1,
 ; CHECK-LABEL: f5:
 ; CHECK: vfmsdb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <2 x double> <double -0.0, double -0.0>, %val3
+  %negval3 = fneg <2 x double> %val3
   %ret = call <2 x double> @llvm.fma.v2f64 (<2 x double> %val1,
                                             <2 x double> %val2,
                                             <2 x double> %negval3)
diff --git a/llvm/test/CodeGen/SystemZ/vec-mul-04.ll b/llvm/test/CodeGen/SystemZ/vec-mul-04.ll
index d96f0b6a745..ad48d0446e8 100644
--- a/llvm/test/CodeGen/SystemZ/vec-mul-04.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-mul-04.ll
@@ -22,8 +22,7 @@ define <4 x float> @f2(<4 x float> %dummy, <4 x float> %val1,
 ; CHECK-LABEL: f2:
 ; CHECK: vfmssb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %val3
+  %negval3 = fneg <4 x float> %val3
   %ret = call <4 x float> @llvm.fma.v4f32 (<4 x float> %val1,
                                            <4 x float> %val2,
                                            <4 x float> %negval3)
diff --git a/llvm/test/CodeGen/SystemZ/vec-mul-05.ll b/llvm/test/CodeGen/SystemZ/vec-mul-05.ll
index 90a1f7a7efd..5435239f2ea 100644
--- a/llvm/test/CodeGen/SystemZ/vec-mul-05.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-mul-05.ll
@@ -14,7 +14,7 @@ define <2 x double> @f1(<2 x double> %dummy, <2 x double> %val1,
   %ret = call <2 x double> @llvm.fma.v2f64 (<2 x double> %val1,
                                             <2 x double> %val2,
                                             <2 x double> %val3)
-  %negret = fsub <2 x double> <double -0.0, double -0.0>, %ret
+  %negret = fneg <2 x double> %ret
   ret <2 x double> %negret
 }
 
@@ -24,11 +24,11 @@ define <2 x double> @f2(<2 x double> %dummy, <2 x double> %val1,
 ; CHECK-LABEL: f2:
 ; CHECK: vfnmsdb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <2 x double> <double -0.0, double -0.0>, %val3
+  %negval3 = fneg <2 x double> %val3
   %ret = call <2 x double> @llvm.fma.v2f64 (<2 x double> %val1,
                                             <2 x double> %val2,
                                             <2 x double> %negval3)
-  %negret = fsub <2 x double> <double -0.0, double -0.0>, %ret
+  %negret = fneg <2 x double> %ret
   ret <2 x double> %negret
 }
 
@@ -41,8 +41,7 @@ define <4 x float> @f3(<4 x float> %dummy, <4 x float> %val1,
   %ret = call <4 x float> @llvm.fma.v4f32 (<4 x float> %val1,
                                            <4 x float> %val2,
                                            <4 x float> %val3)
-  %negret = fsub <4 x float> <float -0.0, float -0.0,
-                              float -0.0, float -0.0>, %ret
+  %negret = fneg <4 x float> %ret
   ret <4 x float> %negret
 }
 
@@ -52,12 +51,10 @@ define <4 x float> @f4(<4 x float> %dummy, <4 x float> %val1,
 ; CHECK-LABEL: f4:
 ; CHECK: vfnmssb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %val3
+  %negval3 = fneg <4 x float> %val3
   %ret = call <4 x float> @llvm.fma.v4f32 (<4 x float> %val1,
                                            <4 x float> %val2,
                                            <4 x float> %negval3)
-  %negret = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %ret
+  %negret = fneg <4 x float> %ret
   ret <4 x float> %negret
 }
diff --git a/llvm/test/CodeGen/SystemZ/vec-neg-01.ll b/llvm/test/CodeGen/SystemZ/vec-neg-01.ll
index b1389ce4d6d..3c1f6e88085 100644
--- a/llvm/test/CodeGen/SystemZ/vec-neg-01.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-neg-01.ll
@@ -43,7 +43,7 @@ define <2 x double> @f5(<2 x double> %dummy, <2 x double> %val) {
 ; CHECK-LABEL: f5:
 ; CHECK: vflcdb %v24, %v26
 ; CHECK: br %r14
-  %ret = fsub <2 x double> <double -0.0, double -0.0>, %val
+  %ret = fneg <2 x double> %val
   ret <2 x double> %ret
 }
 
@@ -53,6 +53,6 @@ define double @f6(<2 x double> %val) {
 ; CHECK: wflcdb %f0, %v24
 ; CHECK: br %r14
   %scalar = extractelement <2 x double> %val, i32 0
-  %ret = fsub double -0.0, %scalar
+  %ret = fneg double %scalar
   ret double %ret
 }
diff --git a/llvm/test/CodeGen/SystemZ/vec-neg-02.ll b/llvm/test/CodeGen/SystemZ/vec-neg-02.ll
index 07ce037542f..f9059decea7 100644
--- a/llvm/test/CodeGen/SystemZ/vec-neg-02.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-neg-02.ll
@@ -7,8 +7,7 @@ define <4 x float> @f1(<4 x float> %dummy, <4 x float> %val) {
 ; CHECK-LABEL: f1:
 ; CHECK: vflcsb %v24, %v26
 ; CHECK: br %r14
-  %ret = fsub <4 x float> <float -0.0, float -0.0,
-                           float -0.0, float -0.0>, %val
+  %ret = fneg <4 x float> %val
   ret <4 x float> %ret
 }
 
@@ -18,6 +17,6 @@ define float @f2(<4 x float> %val) {
 ; CHECK: wflcsb %f0, %v24
 ; CHECK: br %r14
   %scalar = extractelement <4 x float> %val, i32 0
-  %ret = fsub float -0.0, %scalar
+  %ret = fneg float %scalar
   ret float %ret
 }
diff --git a/llvm/test/CodeGen/SystemZ/vec-strict-mul-02.ll b/llvm/test/CodeGen/SystemZ/vec-strict-mul-02.ll
index fc9c1575952..d2341c32374 100644
--- a/llvm/test/CodeGen/SystemZ/vec-strict-mul-02.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-strict-mul-02.ll
@@ -25,7 +25,7 @@ define <2 x double> @f5(<2 x double> %dummy, <2 x double> %val1,
 ; CHECK-LABEL: f5:
 ; CHECK: vfmsdb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <2 x double> <double -0.0, double -0.0>, %val3
+  %negval3 = fneg <2 x double> %val3
   %ret = call <2 x double> @llvm.experimental.constrained.fma.v2f64 (
                         <2 x double> %val1,
                         <2 x double> %val2,
diff --git a/llvm/test/CodeGen/SystemZ/vec-strict-mul-04.ll b/llvm/test/CodeGen/SystemZ/vec-strict-mul-04.ll
index 3a4b1448d46..43656b7da73 100644
--- a/llvm/test/CodeGen/SystemZ/vec-strict-mul-04.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-strict-mul-04.ll
@@ -25,8 +25,7 @@ define <4 x float> @f2(<4 x float> %dummy, <4 x float> %val1,
 ; CHECK-LABEL: f2:
 ; CHECK: vfmssb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %val3
+  %negval3 = fneg <4 x float> %val3
   %ret = call <4 x float> @llvm.experimental.constrained.fma.v4f32 (
                         <4 x float> %val1,
                         <4 x float> %val2,
diff --git a/llvm/test/CodeGen/SystemZ/vec-strict-mul-05.ll b/llvm/test/CodeGen/SystemZ/vec-strict-mul-05.ll
index b99378bc7b7..a367cbe0f48 100644
--- a/llvm/test/CodeGen/SystemZ/vec-strict-mul-05.ll
+++ b/llvm/test/CodeGen/SystemZ/vec-strict-mul-05.ll
@@ -17,7 +17,7 @@ define <2 x double> @f1(<2 x double> %dummy, <2 x double> %val1,
                         <2 x double> %val3,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negret = fsub <2 x double> <double -0.0, double -0.0>, %ret
+  %negret = fneg <2 x double> %ret
   ret <2 x double> %negret
 }
 
@@ -27,14 +27,14 @@ define <2 x double> @f2(<2 x double> %dummy, <2 x double> %val1,
 ; CHECK-LABEL: f2:
 ; CHECK: vfnmsdb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <2 x double> <double -0.0, double -0.0>, %val3
+  %negval3 = fneg <2 x double> %val3
   %ret = call <2 x double> @llvm.experimental.constrained.fma.v2f64 (
                         <2 x double> %val1,
                         <2 x double> %val2,
                         <2 x double> %negval3,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negret = fsub <2 x double> <double -0.0, double -0.0>, %ret
+  %negret = fneg <2 x double> %ret
   ret <2 x double> %negret
 }
 
@@ -50,8 +50,7 @@ define <4 x float> @f3(<4 x float> %dummy, <4 x float> %val1,
                         <4 x float> %val3,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negret = fsub <4 x float> <float -0.0, float -0.0,
-                              float -0.0, float -0.0>, %ret
+  %negret = fneg <4 x float> %ret
   ret <4 x float> %negret
 }
 
@@ -61,16 +60,14 @@ define <4 x float> @f4(<4 x float> %dummy, <4 x float> %val1,
 ; CHECK-LABEL: f4:
 ; CHECK: vfnmssb %v24, %v26, %v28, %v30
 ; CHECK: br %r14
-  %negval3 = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %val3
+  %negval3 = fneg <4 x float> %val3
   %ret = call <4 x float> @llvm.experimental.constrained.fma.v4f32 (
                         <4 x float> %val1,
                         <4 x float> %val2,
                         <4 x float> %negval3,
                         metadata !"round.dynamic",
                         metadata !"fpexcept.strict") #0
-  %negret = fsub <4 x float> <float -0.0, float -0.0,
-                               float -0.0, float -0.0>, %ret
+  %negret = fneg <4 x float> %ret
   ret <4 x float> %negret
 }