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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97576 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
672 B
LLVM
18 lines
672 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 | not grep sub.*GLOBAL
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@GLOBAL = external global i32 ; <i32*> [#uses=1]
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define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind {
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%L = load i32* @GLOBAL ; <i32> [#uses=1]
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store i32 12, i32* %P2
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%Y = load i32* %P3 ; <i32> [#uses=1]
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%Z = sub i32 %Y, %L ; <i32> [#uses=1]
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ret i32 %Z
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}
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