[x86] add tests for fma with undef elts; NFC

llvm-svn: 344523

1 files changed, 46 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/fma_patterns.ll b/llvm/test/CodeGen/X86/fma_patterns.ll
index 2d01c570f99..d0d0dfed352 100644
--- a/llvm/test/CodeGen/X86/fma_patterns.ll
+++ b/llvm/test/CodeGen/X86/fma_patterns.ll
@@ -636,6 +636,29 @@ define <4 x float> @test_v4f32_mul_y_add_x_one(<4 x float> %x, <4 x float> %y) {
   ret <4 x float> %m
 }
 
+define <4 x float> @test_v4f32_mul_y_add_x_one_undefs(<4 x float> %x, <4 x float> %y) {
+; FMA-LABEL: test_v4f32_mul_y_add_x_one_undefs:
+; FMA:       # %bb.0:
+; FMA-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
+; FMA-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; FMA-NEXT:    retq
+;
+; FMA4-LABEL: test_v4f32_mul_y_add_x_one_undefs:
+; FMA4:       # %bb.0:
+; FMA4-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
+; FMA4-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; FMA4-NEXT:    retq
+;
+; AVX512-LABEL: test_v4f32_mul_y_add_x_one_undefs:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vaddps {{.*}}(%rip){1to4}, %xmm0, %xmm0
+; AVX512-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; AVX512-NEXT:    retq
+  %a = fadd <4 x float> %x, <float 1.0, float undef, float 1.0, float undef>
+  %m = fmul <4 x float> %y, %a
+  ret <4 x float> %m
+}
+
 define <4 x float> @test_v4f32_mul_add_x_negone_y(<4 x float> %x, <4 x float> %y) {
 ; FMA-INFS-LABEL: test_v4f32_mul_add_x_negone_y:
 ; FMA-INFS:       # %bb.0:
@@ -712,6 +735,29 @@ define <4 x float> @test_v4f32_mul_y_add_x_negone(<4 x float> %x, <4 x float> %y
   ret <4 x float> %m
 }
 
+define <4 x float> @test_v4f32_mul_y_add_x_negone_undefs(<4 x float> %x, <4 x float> %y) {
+; FMA-LABEL: test_v4f32_mul_y_add_x_negone_undefs:
+; FMA:       # %bb.0:
+; FMA-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
+; FMA-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; FMA-NEXT:    retq
+;
+; FMA4-LABEL: test_v4f32_mul_y_add_x_negone_undefs:
+; FMA4:       # %bb.0:
+; FMA4-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
+; FMA4-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; FMA4-NEXT:    retq
+;
+; AVX512-LABEL: test_v4f32_mul_y_add_x_negone_undefs:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vaddps {{.*}}(%rip){1to4}, %xmm0, %xmm0
+; AVX512-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; AVX512-NEXT:    retq
+  %a = fadd <4 x float> %x, <float undef, float -1.0, float undef, float -1.0>
+  %m = fmul <4 x float> %y, %a
+  ret <4 x float> %m
+}
+
 define <4 x float> @test_v4f32_mul_sub_one_x_y(<4 x float> %x, <4 x float> %y) {
 ; FMA-INFS-LABEL: test_v4f32_mul_sub_one_x_y:
 ; FMA-INFS:       # %bb.0: