[X86][SSE] Replace lossless i32/f32 to f64 conversion intrinsics with generic IR

Both the (V)CVTDQ2PD(Y) (i32 to f64) and (V)CVTPS2PD(Y) (f32 to f64) conversion instructions are lossless and can be safely represented as generic __builtin_convertvector calls instead of x86 intrinsics without affecting final codegen.

This patch removes the clang builtins and their use in the sse2/avx headers - a future patch will deal with removing the llvm intrinsics, but that will require a bit more work.

Differential Revision: http://reviews.llvm.org/D20528

llvm-svn: 270499

1 files changed, 2 insertions, 2 deletions

diff --git a/clang/test/CodeGen/avx-builtins.c b/clang/test/CodeGen/avx-builtins.c
index ad187e805ca..9558421191f 100644
--- a/clang/test/CodeGen/avx-builtins.c
+++ b/clang/test/CodeGen/avx-builtins.c
@@ -250,7 +250,7 @@ __m128 test_mm_cmp_ss(__m128 A, __m128 B) {
 
 __m256d test_mm256_cvtepi32_pd(__m128i A) {
   // CHECK-LABEL: test_mm256_cvtepi32_pd
-  // CHECK: call <4 x double> @llvm.x86.avx.cvtdq2.pd.256(<4 x i32> %{{.*}})
+  // CHECK: sitofp <4 x i32> %{{.*}} to <4 x double>
   return _mm256_cvtepi32_pd(A);
 }
 
@@ -280,7 +280,7 @@ __m256i test_mm256_cvtps_epi32(__m256 A) {
 
 __m256d test_mm256_cvtps_pd(__m128 A) {
   // CHECK-LABEL: test_mm256_cvtps_pd
-  // CHECK: call <4 x double> @llvm.x86.avx.cvt.ps2.pd.256(<4 x float> %{{.*}})
+  // CHECK: fpext <4 x float> %{{.*}} to <4 x double>
   return _mm256_cvtps_pd(A);
 }