18 lines
590 B
LLVM
18 lines
590 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes=reassociate,instcombine -S | FileCheck %s
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; With shl->mul reassociation, we can see that this is (shl A, 9) * A
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define i32 @test(i32 %A) {
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; CHECK-LABEL: define i32 @test(
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; CHECK-SAME: i32 [[A:%.*]]) {
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; CHECK-NEXT: [[Y:%.*]] = shl i32 [[A]], 9
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; CHECK-NEXT: [[Z:%.*]] = mul i32 [[Y]], [[A]]
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; CHECK-NEXT: ret i32 [[Z]]
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;
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%X = shl i32 %A, 5 ; <i32> [#uses=1]
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%Y = shl i32 %A, 4 ; <i32> [#uses=1]
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%Z = mul i32 %Y, %X ; <i32> [#uses=1]
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ret i32 %Z
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}
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