forked from OSchip/llvm-project
298 lines
7.7 KiB
LLVM
298 lines
7.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -reassociate -gvn -instcombine -S | FileCheck %s
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; RUN: opt < %s -passes='reassociate,gvn,instcombine' -S | FileCheck %s
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define i32 @test1(i32 %arg) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[ARG_NEG:%.*]] = sub i32 0, [[ARG:%.*]]
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; CHECK-NEXT: ret i32 [[ARG_NEG]]
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;
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%tmp1 = sub i32 -12, %arg
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%tmp2 = add i32 %tmp1, 12
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ret i32 %tmp2
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}
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define i32 @test2(i32 %reg109, i32 %reg1111) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[REG117:%.*]] = add i32 [[REG1111:%.*]], [[REG109:%.*]]
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; CHECK-NEXT: ret i32 [[REG117]]
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;
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%reg115 = add i32 %reg109, -30
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%reg116 = add i32 %reg115, %reg1111
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%reg117 = add i32 %reg116, 30
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ret i32 %reg117
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}
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@e = external global i32
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@a = external global i32
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@b = external global i32
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@c = external global i32
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@f = external global i32
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[A:%.*]] = load i32, i32* @a, align 4
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; CHECK-NEXT: [[B:%.*]] = load i32, i32* @b, align 4
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; CHECK-NEXT: [[C:%.*]] = load i32, i32* @c, align 4
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B]], [[A]]
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[C]]
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; CHECK-NEXT: store i32 [[T2]], i32* @e, align 4
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; CHECK-NEXT: store i32 [[T2]], i32* @f, align 4
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; CHECK-NEXT: ret void
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;
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%A = load i32, i32* @a
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%B = load i32, i32* @b
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%C = load i32, i32* @c
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%t1 = add i32 %A, %B
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%t2 = add i32 %t1, %C
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%t3 = add i32 %C, %A
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%t4 = add i32 %t3, %B
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; e = (a+b)+c;
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store i32 %t2, i32* @e
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; f = (a+c)+b
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store i32 %t4, i32* @f
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ret void
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}
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define void @test4() {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[A:%.*]] = load i32, i32* @a, align 4
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; CHECK-NEXT: [[B:%.*]] = load i32, i32* @b, align 4
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; CHECK-NEXT: [[C:%.*]] = load i32, i32* @c, align 4
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B]], [[A]]
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[C]]
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; CHECK-NEXT: store i32 [[T2]], i32* @e, align 4
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; CHECK-NEXT: store i32 [[T2]], i32* @f, align 4
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; CHECK-NEXT: ret void
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;
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%A = load i32, i32* @a
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%B = load i32, i32* @b
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%C = load i32, i32* @c
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%t1 = add i32 %A, %B
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%t2 = add i32 %t1, %C
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%t3 = add i32 %C, %A
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%t4 = add i32 %t3, %B
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; e = c+(a+b)
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store i32 %t2, i32* @e
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; f = (c+a)+b
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store i32 %t4, i32* @f
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ret void
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}
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define void @test5() {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[A:%.*]] = load i32, i32* @a, align 4
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; CHECK-NEXT: [[B:%.*]] = load i32, i32* @b, align 4
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; CHECK-NEXT: [[C:%.*]] = load i32, i32* @c, align 4
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; CHECK-NEXT: [[T1:%.*]] = add i32 [[B]], [[A]]
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; CHECK-NEXT: [[T2:%.*]] = add i32 [[T1]], [[C]]
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; CHECK-NEXT: store i32 [[T2]], i32* @e, align 4
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; CHECK-NEXT: store i32 [[T2]], i32* @f, align 4
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; CHECK-NEXT: ret void
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;
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%A = load i32, i32* @a
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%B = load i32, i32* @b
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%C = load i32, i32* @c
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%t1 = add i32 %B, %A
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%t2 = add i32 %t1, %C
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%t3 = add i32 %C, %A
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%t4 = add i32 %t3, %B
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; e = c+(b+a)
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store i32 %t2, i32* @e
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; f = (c+a)+b
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store i32 %t4, i32* @f
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ret void
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}
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define i32 @test6() {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: ret i32 0
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;
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%tmp.0 = load i32, i32* @a
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%tmp.1 = load i32, i32* @b
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; (a+b)
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%tmp.2 = add i32 %tmp.0, %tmp.1
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%tmp.4 = load i32, i32* @c
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; (a+b)+c
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%tmp.5 = add i32 %tmp.2, %tmp.4
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; (a+c)
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%tmp.8 = add i32 %tmp.0, %tmp.4
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; (a+c)+b
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%tmp.11 = add i32 %tmp.8, %tmp.1
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; X ^ X = 0
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%RV = xor i32 %tmp.5, %tmp.11
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ret i32 %RV
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}
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; This should be one add and two multiplies.
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; A*A*B + A*C*A
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define i32 @test7(i32 %A, i32 %B, i32 %C) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[REASS_ADD1:%.*]] = add i32 [[C:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[REASS_MUL2:%.*]] = mul i32 [[A:%.*]], [[A]]
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; CHECK-NEXT: [[REASS_MUL:%.*]] = mul i32 [[REASS_MUL2]], [[REASS_ADD1]]
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; CHECK-NEXT: ret i32 [[REASS_MUL]]
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;
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%aa = mul i32 %A, %A
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%aab = mul i32 %aa, %B
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%ac = mul i32 %A, %C
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%aac = mul i32 %ac, %A
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%r = add i32 %aab, %aac
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ret i32 %r
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}
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define i32 @test8(i32 %X, i32 %Y, i32 %Z) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[A:%.*]] = mul i32 [[Y:%.*]], [[X:%.*]]
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; CHECK-NEXT: [[C:%.*]] = sub i32 [[Z:%.*]], [[A]]
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; CHECK-NEXT: ret i32 [[C]]
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;
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%A = sub i32 0, %X
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%B = mul i32 %A, %Y
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; (-X)*Y + Z -> Z-X*Y
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%C = add i32 %B, %Z
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ret i32 %C
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}
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; PR5458
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define i32 @test9(i32 %X) {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: [[FACTOR:%.*]] = mul i32 [[X:%.*]], 94
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; CHECK-NEXT: ret i32 [[FACTOR]]
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;
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%Y = mul i32 %X, 47
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%Z = add i32 %Y, %Y
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ret i32 %Z
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}
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define i32 @test10(i32 %X) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: [[FACTOR:%.*]] = mul i32 [[X:%.*]], 3
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; CHECK-NEXT: ret i32 [[FACTOR]]
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;
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%Y = add i32 %X ,%X
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%Z = add i32 %Y, %X
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ret i32 %Z
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}
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define i32 @test11(i32 %W) {
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; CHECK-LABEL: @test11(
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; CHECK-NEXT: [[FACTOR:%.*]] = mul i32 [[W:%.*]], 381
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; CHECK-NEXT: ret i32 [[FACTOR]]
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;
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%X = mul i32 %W, 127
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%Y = add i32 %X ,%X
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%Z = add i32 %Y, %X
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ret i32 %Z
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}
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declare void @mumble(i32)
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define i32 @test12(i32 %X) {
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; CHECK-LABEL: @test12(
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; CHECK-NEXT: [[X_NEG:%.*]] = sub i32 0, [[X:%.*]]
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; CHECK-NEXT: call void @mumble(i32 [[X_NEG]])
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; CHECK-NEXT: [[FACTOR:%.*]] = mul i32 [[X]], -3
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; CHECK-NEXT: [[Z:%.*]] = add i32 [[FACTOR]], 6
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%X.neg = sub nsw nuw i32 0, %X
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call void @mumble(i32 %X.neg)
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%A = sub i32 1, %X
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%B = sub i32 2, %X
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%C = sub i32 3, %X
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%Y = add i32 %A ,%B
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%Z = add i32 %Y, %C
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ret i32 %Z
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}
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define i32 @test13(i32 %X1, i32 %X2, i32 %X3) {
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; CHECK-LABEL: @test13(
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; CHECK-NEXT: [[REASS_ADD:%.*]] = sub i32 [[X3:%.*]], [[X2:%.*]]
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; CHECK-NEXT: [[REASS_MUL:%.*]] = mul i32 [[REASS_ADD]], [[X1:%.*]]
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; CHECK-NEXT: ret i32 [[REASS_MUL]]
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;
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%A = sub i32 0, %X1
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%B = mul i32 %A, %X2 ; -X1*X2
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%C = mul i32 %X1, %X3 ; X1*X3
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%D = add i32 %B, %C ; -X1*X2 + X1*X3 -> X1*(X3-X2)
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ret i32 %D
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}
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; PR5359
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define i32 @test14(i32 %X1, i32 %X2) {
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; CHECK-LABEL: @test14(
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; CHECK-NEXT: [[REASS_ADD:%.*]] = sub i32 [[X1:%.*]], [[X2:%.*]]
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; CHECK-NEXT: [[REASS_MUL:%.*]] = mul i32 [[REASS_ADD]], 47
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; CHECK-NEXT: ret i32 [[REASS_MUL]]
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;
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%B = mul i32 %X1, 47 ; X1*47
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%C = mul i32 %X2, -47 ; X2*-47
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%D = add i32 %B, %C ; X1*47 + X2*-47 -> 47*(X1-X2)
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ret i32 %D
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}
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; Do not reassociate expressions of type i1
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define i32 @test15(i32 %X1, i32 %X2, i32 %X3) {
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; CHECK-LABEL: @test15(
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; CHECK-NEXT: [[A:%.*]] = icmp ne i32 [[X1:%.*]], 0
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; CHECK-NEXT: [[B:%.*]] = icmp slt i32 [[X2:%.*]], [[X3:%.*]]
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; CHECK-NEXT: [[C:%.*]] = and i1 [[A]], [[B]]
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; CHECK-NEXT: [[D:%.*]] = select i1 [[C]], i32 [[X1]], i32 0
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; CHECK-NEXT: ret i32 [[D]]
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;
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%A = icmp ne i32 %X1, 0
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%B = icmp slt i32 %X2, %X3
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%C = and i1 %A, %B
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%D = select i1 %C, i32 %X1, i32 0
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ret i32 %D
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}
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; PR30256 - previously this asserted.
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define i64 @test16(i1 %cmp, i64 %a, i64 %b) {
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; CHECK-LABEL: @test16(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[CMP:%.*]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[FACTOR:%.*]] = mul i64 [[A:%.*]], -4
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; CHECK-NEXT: [[ADD2:%.*]] = add i64 [[FACTOR]], [[B:%.*]]
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; CHECK-NEXT: ret i64 [[ADD2]]
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; CHECK: if.end:
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; CHECK-NEXT: ret i64 0
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;
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entry:
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%shl = shl i64 %a, 1
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%shl.neg = sub i64 0, %shl
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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%add1 = add i64 %shl.neg, %shl.neg
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%add2 = add i64 %add1, %b
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ret i64 %add2
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if.end:
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ret i64 0
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}
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define i32 @test17(i32 %X1, i32 %X2, i32 %X3, i32 %X4) {
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; CHECK-LABEL: @test17(
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; CHECK-NEXT: [[A:%.*]] = mul i32 [[X4:%.*]], [[X3:%.*]]
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; CHECK-NEXT: [[C:%.*]] = mul i32 [[A]], [[X1:%.*]]
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; CHECK-NEXT: [[D:%.*]] = mul i32 [[A]], [[X2:%.*]]
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; CHECK-NEXT: [[E:%.*]] = xor i32 [[C]], [[D]]
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; CHECK-NEXT: ret i32 [[E]]
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;
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%A = mul i32 %X3, %X1
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%B = mul i32 %X3, %X2
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%C = mul i32 %A, %X4
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%D = mul i32 %B, %X4
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%E = xor i32 %C, %D
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ret i32 %E
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}
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