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2f7726217d
Patch by Jorge Gorbe! Differential Revision: https://reviews.llvm.org/D29807 llvm-svn: 295386
21 lines
584 B
LLVM
21 lines
584 B
LLVM
; This testcase was distilled from 132.ijpeg. Bsaically we cannot fold the
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; load into the sub instruction here as it induces a cycle in the dag, which
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; is invalid code (there is no correct way to order the instruction). Check
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; that we do not fold the load into the sub.
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; RUN: llc < %s -march=x86 | FileCheck %s
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@GLOBAL = external global i32
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define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind {
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; CHECK-LABEL: test:
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entry:
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%L = load i32, i32* @GLOBAL
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store i32 12, i32* %P2
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%Y = load i32, i32* %P3
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%Z = sub i32 %Y, %L
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ret i32 %Z
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; CHECK-NOT: {{sub.*GLOBAL}}
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}
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