17 lines
416 B
LLVM
17 lines
416 B
LLVM
; RUN: opt < %s -reassociate -instcombine -S | FileCheck %s
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; There should be exactly one shift and one add left.
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define i32 @test1(i32 %X, i32 %Y) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[REASS_ADD:%.*]] = add i32 %Y, %X
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; CHECK-NEXT: [[REASS_MUL:%.*]] = shl i32 [[REASS_ADD]], 1
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; CHECK-NEXT: ret i32 [[REASS_MUL]]
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;
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%t2 = shl i32 %X, 1
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%t6 = shl i32 %Y, 1
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%t4 = add i32 %t6, %t2
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ret i32 %t4
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}
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