derek.holloway
7502bf64a4
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38 lines
2.4 KiB
LLVM
38 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
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; RUN: opt %s -passes=gvn -S -enable-gvn-memdep=false | FileCheck %s
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; RUN: opt %s -passes=gvn -S -enable-gvn-memdep=true | FileCheck %s
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; Check that llvm.x86.avx2.gather.d.ps.256 intrinsic is not eliminated by GVN
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; with and without memory dependence info.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: nounwind readonly
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declare <8 x float> @llvm.x86.avx2.gather.d.ps.256(<8 x float>, ptr, <8 x i32>, <8 x float>, i8) #0
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; Function Attrs: nounwind
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define <8 x float> @foo1(ptr noalias readonly %arr.ptr, ptr noalias readonly %vix.ptr, ptr noalias %t2.ptr) #1 {
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; CHECK-LABEL: define <8 x float> @foo1(
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; CHECK-SAME: ptr noalias readonly [[ARR_PTR:%.*]], ptr noalias readonly [[VIX_PTR:%.*]], ptr noalias [[T2_PTR:%.*]]) {
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; CHECK-NEXT: [[ALLOCAS:.*:]]
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; CHECK-NEXT: [[VIX:%.*]] = load <8 x i32>, ptr [[VIX_PTR]], align 4
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; CHECK-NEXT: [[T1_PTR:%.*]] = getelementptr i8, ptr [[ARR_PTR]], i8 4
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; CHECK-NEXT: [[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> splat (float -nan(0x3FFFFF)), i8 1)
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; CHECK-NEXT: store i8 1, ptr [[T1_PTR]], align 4
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; CHECK-NEXT: [[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> splat (float -nan(0x3FFFFF)), i8 1)
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; CHECK-NEXT: [[RES:%.*]] = fadd <8 x float> [[V1]], [[V2]]
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; CHECK-NEXT: ret <8 x float> [[RES]]
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;
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allocas:
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%vix = load <8 x i32>, ptr %vix.ptr, align 4
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%t1.ptr = getelementptr i8, ptr %arr.ptr, i8 4
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%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
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store i8 1, ptr %t1.ptr, align 4
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%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
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%res = fadd <8 x float> %v1, %v2
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ret <8 x float> %res
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}
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