| ; RUN: opt %s -passes=gvn -S -enable-gvn-memdep=false | FileCheck %s |
| ; RUN: opt %s -passes=gvn -S -enable-gvn-memdep=true | FileCheck %s |
| |
| ; Check that llvm.x86.avx2.gather.d.ps.256 intrinsic is not eliminated by GVN |
| ; with and without memory dependence info. |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Function Attrs: nounwind readonly |
| declare <8 x float> @llvm.x86.avx2.gather.d.ps.256(<8 x float>, ptr, <8 x i32>, <8 x float>, i8) #0 |
| |
| ; Function Attrs: nounwind |
| define <8 x float> @foo1(ptr noalias readonly %arr.ptr, ptr noalias readonly %vix.ptr, ptr noalias %t2.ptr) #1 { |
| allocas: |
| %vix = load <8 x i32>, ptr %vix.ptr, align 4 |
| %t1.ptr = getelementptr i8, ptr %arr.ptr, i8 4 |
| |
| %v1 = tail call <8 x float> @llvm.x86.avx2.gather.d.ps.256(<8 x float> undef, ptr %arr.ptr, <8 x i32> %vix, <8 x float> <float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000>, i8 1) #2 |
| store i8 1, ptr %t1.ptr, align 4 |
| |
| %v2 = tail call <8 x float> @llvm.x86.avx2.gather.d.ps.256(<8 x float> undef, ptr %arr.ptr, <8 x i32> %vix, <8 x float> <float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000, float 0xFFFFFFFFE0000000>, i8 1) #2 |
| %res = fadd <8 x float> %v1, %v2 |
| |
| ret <8 x float> %res |
| } |
| ; CHECK: foo1 |
| ; CHECK: llvm.x86.avx2.gather.d.ps.256 |
| ; CHECK: store |
| ; CHECK: llvm.x86.avx2.gather.d.ps.256 |