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0c617e6026
InstCombineLoadStoreAlloca.cpp, which had many issues. (At least two bugs were noted on llvm-commits, and it was overly conservative.) Instead, use getOrEnforceKnownAlignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168629 91177308-0d34-0410-b5e6-96231b3b80d8
147 lines
7.8 KiB
LLVM
147 lines
7.8 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64"
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@C.0.1248 = internal constant [128 x float] [ float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float -1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float -1.000000e+00, float 1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float -1.000000e+00, float 0.000000e+00, float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 ], align 32 ; <[128 x float]*> [#uses=1]
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define float @test1(i32 %hash, float %x, float %y, float %z, float %w) {
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entry:
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%lookupTable = alloca [128 x float], align 16 ; <[128 x float]*> [#uses=5]
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%lookupTable1 = bitcast [128 x float]* %lookupTable to i8* ; <i8*> [#uses=1]
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %lookupTable1, i8* bitcast ([128 x float]* @C.0.1248 to i8*), i64 512, i32 16, i1 false)
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; CHECK: @test1
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; CHECK-NOT: alloca
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; CHECK-NOT: call{{.*}}@llvm.memcpy
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%tmp3 = shl i32 %hash, 2 ; <i32> [#uses=1]
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%tmp5 = and i32 %tmp3, 124 ; <i32> [#uses=4]
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%tmp753 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp5 ; <float*> [#uses=1]
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%tmp9 = load float* %tmp753 ; <float> [#uses=1]
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%tmp11 = fmul float %tmp9, %x ; <float> [#uses=1]
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%tmp13 = fadd float %tmp11, 0.000000e+00 ; <float> [#uses=1]
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%tmp17.sum52 = or i32 %tmp5, 1 ; <i32> [#uses=1]
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%tmp1851 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp17.sum52 ; <float*> [#uses=1]
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%tmp19 = load float* %tmp1851 ; <float> [#uses=1]
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%tmp21 = fmul float %tmp19, %y ; <float> [#uses=1]
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%tmp23 = fadd float %tmp21, %tmp13 ; <float> [#uses=1]
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%tmp27.sum50 = or i32 %tmp5, 2 ; <i32> [#uses=1]
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%tmp2849 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp27.sum50 ; <float*> [#uses=1]
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%tmp29 = load float* %tmp2849 ; <float> [#uses=1]
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%tmp31 = fmul float %tmp29, %z ; <float> [#uses=1]
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%tmp33 = fadd float %tmp31, %tmp23 ; <float> [#uses=1]
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%tmp37.sum48 = or i32 %tmp5, 3 ; <i32> [#uses=1]
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%tmp3847 = getelementptr [128 x float]* %lookupTable, i32 0, i32 %tmp37.sum48 ; <float*> [#uses=1]
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%tmp39 = load float* %tmp3847 ; <float> [#uses=1]
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%tmp41 = fmul float %tmp39, %w ; <float> [#uses=1]
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%tmp43 = fadd float %tmp41, %tmp33 ; <float> [#uses=1]
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ret float %tmp43
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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%T = type { i8, [123 x i8] }
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%U = type { i32, i32, i32, i32, i32 }
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@G = constant %T {i8 1, [123 x i8] zeroinitializer }
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@H = constant [2 x %U] zeroinitializer, align 16
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define void @test2() {
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%A = alloca %T
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%B = alloca %T
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%a = bitcast %T* %A to i8*
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%b = bitcast %T* %B to i8*
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; CHECK: @test2
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; %A alloca is deleted
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; CHECK-NEXT: alloca [124 x i8]
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; CHECK-NEXT: getelementptr inbounds [124 x i8]*
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; use @G instead of %A
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %{{.*}}, i8* getelementptr inbounds (%T* @G, i64 0, i32 0)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %a, i64 124, i32 4, i1 false)
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call void @bar(i8* %b)
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ret void
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}
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declare void @bar(i8*)
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;; Should be able to eliminate the alloca.
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define void @test3() {
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%A = alloca %T
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%a = bitcast %T* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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call void @bar(i8* %a) readonly
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; CHECK: @test3
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; CHECK-NEXT: call void @bar(i8* getelementptr inbounds (%T* @G, i64 0, i32 0))
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ret void
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}
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define void @test4() {
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%A = alloca %T
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%a = bitcast %T* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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call void @baz(i8* byval %a)
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; CHECK: @test4
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; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T* @G, i64 0, i32 0))
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ret void
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}
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declare void @llvm.lifetime.start(i64, i8*)
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define void @test5() {
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%A = alloca %T
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%a = bitcast %T* %A to i8*
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call void @llvm.lifetime.start(i64 -1, i8* %a)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%T* @G to i8*), i64 124, i32 4, i1 false)
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call void @baz(i8* byval %a)
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; CHECK: @test5
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; CHECK-NEXT: call void @baz(i8* byval getelementptr inbounds (%T* @G, i64 0, i32 0))
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ret void
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}
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declare void @baz(i8* byval)
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define void @test6() {
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%A = alloca %U, align 16
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%a = bitcast %U* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast ([2 x %U]* @H to i8*), i64 20, i32 16, i1 false)
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call void @bar(i8* %a) readonly
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; CHECK: @test6
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; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*))
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ret void
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}
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define void @test7() {
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%A = alloca %U, align 16
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%a = bitcast %U* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%U* getelementptr ([2 x %U]* @H, i64 0, i32 0) to i8*), i64 20, i32 4, i1 false)
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call void @bar(i8* %a) readonly
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; CHECK: @test7
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; CHECK-NEXT: call void @bar(i8* bitcast ([2 x %U]* @H to i8*))
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ret void
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}
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define void @test8() {
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%A = alloca %U, align 16
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%a = bitcast %U* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%U* getelementptr ([2 x %U]* @H, i64 0, i32 1) to i8*), i64 20, i32 4, i1 false)
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call void @bar(i8* %a) readonly
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; CHECK: @test8
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; CHECK: llvm.memcpy
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; CHECK: bar
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ret void
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}
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define void @test9() {
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%A = alloca %U, align 4
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%a = bitcast %U* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* bitcast (%U* getelementptr ([2 x %U]* @H, i64 0, i32 1) to i8*), i64 20, i32 4, i1 false)
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call void @bar(i8* %a) readonly
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; CHECK: @test9
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; CHECK-NEXT: call void @bar(i8* bitcast (%U* getelementptr inbounds ([2 x %U]* @H, i64 0, i64 1) to i8*))
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ret void
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}
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