[SystemZ] Support constrained fpto[su]i intrinsics

Now that constrained fpto[su]i intrinsic are available,
add codegen support to the SystemZ backend.

In addition to pure back-end changes, I've also needed
to add the strict_fp_to_[su]int and any_fp_to_[su]int
pattern fragments in the obvious way.

llvm-svn: 370674

8 files changed, 505 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-09.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-09.ll
new file mode 100644
index 00000000000..b1a11e66e2a
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-09.ll
@@ -0,0 +1,40 @@
+; Test strict conversion of floating-point values to signed i32s.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+declare i32 @llvm.experimental.constrained.fptosi.i32.f32(float, metadata)
+declare i32 @llvm.experimental.constrained.fptosi.i32.f64(double, metadata)
+declare i32 @llvm.experimental.constrained.fptosi.i32.f128(fp128, metadata)
+
+; Test f32->i32.
+define i32 @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK: cfebr %r2, 5, %f0
+; CHECK: br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptosi.i32.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f64->i32.
+define i32 @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK: cfdbr %r2, 5, %f0
+; CHECK: br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptosi.i32.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f128->i32.
+define i32 @f3(fp128 *%src) {
+; CHECK-LABEL: f3:
+; CHECK: ld %f0, 0(%r2)
+; CHECK: ld %f2, 8(%r2)
+; CHECK: cfxbr %r2, 5, %f0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i32 @llvm.experimental.constrained.fptosi.i32.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-10.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-10.ll
new file mode 100644
index 00000000000..d69e64d7c96
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-10.ll
@@ -0,0 +1,95 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; Test strict conversion of floating-point values to unsigned i32s (z10 only).
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
+
+; z10 doesn't have native support for unsigned fp-to-i32 conversions;
+; they were added in z196 as the Convert to Logical family of instructions.
+; Promoting to i64 doesn't generate an inexact condition for values that are
+; outside the i32 range but in the i64 range, so use the default expansion.
+; Note that the strict expansion sequence must be used.
+
+declare i32 @llvm.experimental.constrained.fptoui.i32.f32(float, metadata)
+declare i32 @llvm.experimental.constrained.fptoui.i32.f64(double, metadata)
+declare i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128, metadata)
+
+; Test f32->i32.
+define i32 @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    larl %r1, .LCPI0_0
+; CHECK-NEXT:    le %f2, 0(%r1)
+; CHECK-NEXT:    ler %f1, %f0
+; CHECK-NEXT:    sebr %f1, %f2
+; CHECK-NEXT:    cebr %f0, %f2
+; CHECK-NEXT:    jl .LBB0_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    ler %f0, %f1
+; CHECK-NEXT:  .LBB0_2:
+; CHECK-NEXT:    lhi %r0, 0
+; CHECK-NEXT:    jl .LBB0_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llilh %r0, 32768
+; CHECK-NEXT:  .LBB0_4:
+; CHECK-NEXT:    cfebr %r2, 5, %f0
+; CHECK-NEXT:    xr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f64->i32.
+define i32 @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    larl %r1, .LCPI1_0
+; CHECK-NEXT:    ldeb %f2, 0(%r1)
+; CHECK-NEXT:    ldr %f1, %f0
+; CHECK-NEXT:    sdbr %f1, %f2
+; CHECK-NEXT:    cdbr %f0, %f2
+; CHECK-NEXT:    jl .LBB1_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    ldr %f0, %f1
+; CHECK-NEXT:  .LBB1_2:
+; CHECK-NEXT:    lhi %r0, 0
+; CHECK-NEXT:    jl .LBB1_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llilh %r0, 32768
+; CHECK-NEXT:  .LBB1_4:
+; CHECK-NEXT:    cfdbr %r2, 5, %f0
+; CHECK-NEXT:    xr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f128->i32.
+define i32 @f3(fp128 *%src) {
+; CHECK-LABEL: f3:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ld %f0, 0(%r2)
+; CHECK-NEXT:    ld %f2, 8(%r2)
+; CHECK-NEXT:    larl %r1, .LCPI2_0
+; CHECK-NEXT:    lxeb %f4, 0(%r1)
+; CHECK-NEXT:    lxr %f1, %f0
+; CHECK-NEXT:    sxbr %f1, %f4
+; CHECK-NEXT:    cxbr %f0, %f4
+; CHECK-NEXT:    jl .LBB2_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    lxr %f0, %f1
+; CHECK-NEXT:  .LBB2_2:
+; CHECK-NEXT:    lhi %r0, 0
+; CHECK-NEXT:    jl .LBB2_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llilh %r0, 32768
+; CHECK-NEXT:  .LBB2_4:
+; CHECK-NEXT:    cfxbr %r2, 5, %f0
+; CHECK-NEXT:    xr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-11.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-11.ll
new file mode 100644
index 00000000000..bc3e9b9b8a5
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-11.ll
@@ -0,0 +1,40 @@
+; Test strict conversion of floating-point values to signed i64s.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+declare i64 @llvm.experimental.constrained.fptosi.i64.f32(float, metadata)
+declare i64 @llvm.experimental.constrained.fptosi.i64.f64(double, metadata)
+declare i64 @llvm.experimental.constrained.fptosi.i64.f128(fp128, metadata)
+
+; Test f32->i64.
+define i64 @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK: cgebr %r2, 5, %f0
+; CHECK: br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptosi.i64.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f64->i64.
+define i64 @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK: cgdbr %r2, 5, %f0
+; CHECK: br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptosi.i64.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f128->i64.
+define i64 @f3(fp128 *%src) {
+; CHECK-LABEL: f3:
+; CHECK: ld %f0, 0(%r2)
+; CHECK: ld %f2, 8(%r2)
+; CHECK: cgxbr %r2, 5, %f0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i64 @llvm.experimental.constrained.fptosi.i64.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-12.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-12.ll
new file mode 100644
index 00000000000..2319c629daf
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-12.ll
@@ -0,0 +1,94 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; Test strict conversion of floating-point values to unsigned i64s (z10 only).
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
+
+; z10 doesn't have native support for unsigned fp-to-i64 conversions;
+; they were added in z196 as the Convert to Logical family of instructions.
+; Convert via signed i64s instead.
+; Note that the strict expansion sequence must be used.
+
+declare i64 @llvm.experimental.constrained.fptoui.i64.f32(float, metadata)
+declare i64 @llvm.experimental.constrained.fptoui.i64.f64(double, metadata)
+declare i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128, metadata)
+
+; Test f32->i64.
+define i64 @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    larl %r1, .LCPI0_0
+; CHECK-NEXT:    le %f2, 0(%r1)
+; CHECK-NEXT:    ler %f1, %f0
+; CHECK-NEXT:    sebr %f1, %f2
+; CHECK-NEXT:    cebr %f0, %f2
+; CHECK-NEXT:    jl .LBB0_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    ler %f0, %f1
+; CHECK-NEXT:  .LBB0_2:
+; CHECK-NEXT:    lghi %r0, 0
+; CHECK-NEXT:    jl .LBB0_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llihh %r0, 32768
+; CHECK-NEXT:  .LBB0_4:
+; CHECK-NEXT:    cgebr %r2, 5, %f0
+; CHECK-NEXT:    xgr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f64->i64.
+define i64 @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    larl %r1, .LCPI1_0
+; CHECK-NEXT:    ldeb %f2, 0(%r1)
+; CHECK-NEXT:    ldr %f1, %f0
+; CHECK-NEXT:    sdbr %f1, %f2
+; CHECK-NEXT:    cdbr %f0, %f2
+; CHECK-NEXT:    jl .LBB1_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    ldr %f0, %f1
+; CHECK-NEXT:  .LBB1_2:
+; CHECK-NEXT:    lghi %r0, 0
+; CHECK-NEXT:    jl .LBB1_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llihh %r0, 32768
+; CHECK-NEXT:  .LBB1_4:
+; CHECK-NEXT:    cgdbr %r2, 5, %f0
+; CHECK-NEXT:    xgr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f128->i64.
+define i64 @f3(fp128 *%src) {
+; CHECK-LABEL: f3:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    ld %f0, 0(%r2)
+; CHECK-NEXT:    ld %f2, 8(%r2)
+; CHECK-NEXT:    larl %r1, .LCPI2_0
+; CHECK-NEXT:    lxeb %f4, 0(%r1)
+; CHECK-NEXT:    lxr %f1, %f0
+; CHECK-NEXT:    sxbr %f1, %f4
+; CHECK-NEXT:    cxbr %f0, %f4
+; CHECK-NEXT:    jl .LBB2_2
+; CHECK-NEXT:  # %bb.1:
+; CHECK-NEXT:    lxr %f0, %f1
+; CHECK-NEXT:  .LBB2_2:
+; CHECK-NEXT:    lghi %r0, 0
+; CHECK-NEXT:    jl .LBB2_4
+; CHECK-NEXT:  # %bb.3:
+; CHECK-NEXT:    llihh %r0, 32768
+; CHECK-NEXT:  .LBB2_4:
+; CHECK-NEXT:    cgxbr %r2, 5, %f0
+; CHECK-NEXT:    xgr %r2, %r0
+; CHECK-NEXT:    br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-14.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-14.ll
new file mode 100644
index 00000000000..70a02c55799
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-14.ll
@@ -0,0 +1,77 @@
+; Test strict conversion of floating-point values to unsigned integers.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
+
+declare i32 @llvm.experimental.constrained.fptoui.i32.f32(float, metadata)
+declare i32 @llvm.experimental.constrained.fptoui.i32.f64(double, metadata)
+declare i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128, metadata)
+
+declare i64 @llvm.experimental.constrained.fptoui.i64.f32(float, metadata)
+declare i64 @llvm.experimental.constrained.fptoui.i64.f64(double, metadata)
+declare i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128, metadata)
+
+; Test f32->i32.
+define i32 @f1(float %f) {
+; CHECK-LABEL: f1:
+; CHECK: clfebr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f64->i32.
+define i32 @f2(double %f) {
+; CHECK-LABEL: f2:
+; CHECK: clfdbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f128->i32.
+define i32 @f3(fp128 *%src) {
+; CHECK-LABEL: f3:
+; CHECK-DAG: ld %f0, 0(%r2)
+; CHECK-DAG: ld %f2, 8(%r2)
+; CHECK: clfxbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test f32->i64.
+define i64 @f4(float %f) {
+; CHECK-LABEL: f4:
+; CHECK: clgebr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f32(float %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f64->i64.
+define i64 @f5(double %f) {
+; CHECK-LABEL: f5:
+; CHECK: clgdbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f64(double %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test f128->i64.
+define i64 @f6(fp128 *%src) {
+; CHECK-LABEL: f6:
+; CHECK-DAG: ld %f0, 0(%r2)
+; CHECK-DAG: ld %f2, 8(%r2)
+; CHECK: clgxbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/fp-strict-conv-16.ll b/llvm/test/CodeGen/SystemZ/fp-strict-conv-16.ll
new file mode 100644
index 00000000000..fbbb608ac7c
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-strict-conv-16.ll
@@ -0,0 +1,63 @@
+; Test f128 floating-point strict conversion to/from integers on z14.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
+
+; FIXME: llvm.experimental.constrained.[su]itofp does not yet exist
+
+declare i32 @llvm.experimental.constrained.fptosi.i32.f128(fp128, metadata)
+declare i64 @llvm.experimental.constrained.fptosi.i64.f128(fp128, metadata)
+
+declare i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128, metadata)
+declare i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128, metadata)
+
+; Test signed f128->i32.
+define i32 @f5(fp128 *%src) {
+; CHECK-LABEL: f5:
+; CHECK: vl %v0, 0(%r2)
+; CHECK: vrepg %v2, %v0, 1
+; CHECK: cfxbr %r2, 5, %f0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i32 @llvm.experimental.constrained.fptosi.i32.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test signed f128->i64.
+define i64 @f6(fp128 *%src) {
+; CHECK-LABEL: f6:
+; CHECK: vl %v0, 0(%r2)
+; CHECK: vrepg %v2, %v0, 1
+; CHECK: cgxbr %r2, 5, %f0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i64 @llvm.experimental.constrained.fptosi.i64.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
+
+; Test unsigned f128->i32.
+define i32 @f7(fp128 *%src) {
+; CHECK-LABEL: f7:
+; CHECK: vl %v0, 0(%r2)
+; CHECK: vrepg %v2, %v0, 1
+; CHECK: clfxbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i32 %conv
+}
+
+; Test unsigned f128->i64.
+define i64 @f8(fp128 *%src) {
+; CHECK-LABEL: f8:
+; CHECK: vl %v0, 0(%r2)
+; CHECK: vrepg %v2, %v0, 1
+; CHECK: clgxbr %r2, 5, %f0, 0
+; CHECK: br %r14
+  %f = load fp128, fp128 *%src
+  %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128 %f,
+                                               metadata !"fpexcept.strict")
+  ret i64 %conv
+}
diff --git a/llvm/test/CodeGen/SystemZ/vec-strict-conv-01.ll b/llvm/test/CodeGen/SystemZ/vec-strict-conv-01.ll
new file mode 100644
index 00000000000..a5fa0066b14
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/vec-strict-conv-01.ll
@@ -0,0 +1,67 @@
+; Test strict conversions between integer and float elements.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
+
+; FIXME: llvm.experimental.constrained.[su]itofp does not yet exist
+
+declare <2 x i64> @llvm.experimental.constrained.fptoui.v2i64.v2f64(<2 x double>, metadata)
+declare <2 x i64> @llvm.experimental.constrained.fptosi.v2i64.v2f64(<2 x double>, metadata)
+
+declare <2 x i32> @llvm.experimental.constrained.fptoui.v2i32.v2f64(<2 x double>, metadata)
+declare <2 x i32> @llvm.experimental.constrained.fptosi.v2i32.v2f64(<2 x double>, metadata)
+
+declare <2 x i64> @llvm.experimental.constrained.fptoui.v2i64.v2f32(<2 x float>, metadata)
+declare <2 x i64> @llvm.experimental.constrained.fptosi.v2i64.v2f32(<2 x float>, metadata)
+
+; Test conversion of f64s to signed i64s.
+define <2 x i64> @f1(<2 x double> %doubles) {
+; CHECK-LABEL: f1:
+; CHECK: vcgdb %v24, %v24, 0, 5
+; CHECK: br %r14
+  %dwords = call <2 x i64> @llvm.experimental.constrained.fptosi.v2i64.v2f64(<2 x double> %doubles,
+                                               metadata !"fpexcept.strict")
+  ret <2 x i64> %dwords
+}
+
+; Test conversion of f64s to unsigned i64s.
+define <2 x i64> @f2(<2 x double> %doubles) {
+; CHECK-LABEL: f2:
+; CHECK: vclgdb %v24, %v24, 0, 5
+; CHECK: br %r14
+  %dwords = call <2 x i64> @llvm.experimental.constrained.fptoui.v2i64.v2f64(<2 x double> %doubles,
+                                               metadata !"fpexcept.strict")
+  ret <2 x i64> %dwords
+}
+
+; Test conversion of f64s to signed i32s, which must compile.
+define void @f5(<2 x double> %doubles, <2 x i32> *%ptr) {
+  %words = call <2 x i32> @llvm.experimental.constrained.fptosi.v2i32.v2f64(<2 x double> %doubles,
+                                               metadata !"fpexcept.strict")
+  store <2 x i32> %words, <2 x i32> *%ptr
+  ret void
+}
+
+; Test conversion of f64s to unsigned i32s, which must compile.
+define void @f6(<2 x double> %doubles, <2 x i32> *%ptr) {
+  %words = call <2 x i32> @llvm.experimental.constrained.fptoui.v2i32.v2f64(<2 x double> %doubles,
+                                               metadata !"fpexcept.strict")
+  store <2 x i32> %words, <2 x i32> *%ptr
+  ret void
+}
+
+; Test conversion of f32s to signed i64s, which must compile.
+define <2 x i64> @f9(<2 x float> *%ptr) {
+  %floats = load <2 x float>, <2 x float> *%ptr
+  %dwords = call <2 x i64> @llvm.experimental.constrained.fptosi.v2i64.v2f32(<2 x float> %floats,
+                                               metadata !"fpexcept.strict")
+  ret <2 x i64> %dwords
+}
+
+; Test conversion of f32s to unsigned i64s, which must compile.
+define <2 x i64> @f10(<2 x float> *%ptr) {
+  %floats = load <2 x float>, <2 x float> *%ptr
+  %dwords = call <2 x i64> @llvm.experimental.constrained.fptoui.v2i64.v2f32(<2 x float> %floats,
+                                               metadata !"fpexcept.strict")
+  ret <2 x i64> %dwords
+}
+
diff --git a/llvm/test/CodeGen/SystemZ/vec-strict-conv-03.ll b/llvm/test/CodeGen/SystemZ/vec-strict-conv-03.ll
new file mode 100644
index 00000000000..f42a2b41202
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/vec-strict-conv-03.ll
@@ -0,0 +1,29 @@
+; Test strict conversions between integer and float elements on arch13.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=arch13 | FileCheck %s
+
+; FIXME: llvm.experimental.constrained.[su]itofp does not yet exist
+
+declare <4 x i32> @llvm.experimental.constrained.fptoui.v4i32.v4f32(<4 x float>, metadata)
+declare <4 x i32> @llvm.experimental.constrained.fptosi.v4i32.v4f32(<4 x float>, metadata)
+
+; Test conversion of f32s to signed i32s.
+define <4 x i32> @f1(<4 x float> %floats) {
+; CHECK-LABEL: f1:
+; CHECK: vcfeb %v24, %v24, 0, 5
+; CHECK: br %r14
+  %words = call <4 x i32> @llvm.experimental.constrained.fptosi.v4i32.v4f32(<4 x float> %floats,
+                                               metadata !"fpexcept.strict")
+  ret <4 x i32> %words
+}
+
+; Test conversion of f32s to unsigned i32s.
+define <4 x i32> @f2(<4 x float> %floats) {
+; CHECK-LABEL: f2:
+; CHECK: vclfeb %v24, %v24, 0, 5
+; CHECK: br %r14
+  %words = call <4 x i32> @llvm.experimental.constrained.fptoui.v4i32.v4f32(<4 x float> %floats,
+                                               metadata !"fpexcept.strict")
+  ret <4 x i32> %words
+}
+