45 lines
1.2 KiB
LLVM
45 lines
1.2 KiB
LLVM
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; Test: ExternalConstant
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;
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; Description:
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; This regression test helps check whether the instruction combining
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; optimization pass correctly handles global variables which are marked
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; as external and constant.
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;
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; If a problem occurs, we should die on an assert(). Otherwise, we
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; should pass through the optimizer without failure.
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;
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; Extra code:
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; RUN: opt < %s -instcombine
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; END.
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target datalayout = "e-p:32:32"
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@silly = external constant i32 ; <i32*> [#uses=1]
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declare void @bzero(i8*, i32)
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declare void @bcopy(i8*, i8*, i32)
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declare i32 @bcmp(i8*, i8*, i32)
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declare i32 @fputs(i8*, i8*)
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declare i32 @fputs_unlocked(i8*, i8*)
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define i32 @function(i32 %a.1) {
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entry:
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%a.0 = alloca i32 ; <i32*> [#uses=2]
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%result = alloca i32 ; <i32*> [#uses=2]
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store i32 %a.1, i32* %a.0
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%tmp.0 = load i32* %a.0 ; <i32> [#uses=1]
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%tmp.1 = load i32* @silly ; <i32> [#uses=1]
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%tmp.2 = add i32 %tmp.0, %tmp.1 ; <i32> [#uses=1]
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store i32 %tmp.2, i32* %result
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br label %return
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return: ; preds = %entry
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%tmp.3 = load i32* %result ; <i32> [#uses=1]
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ret i32 %tmp.3
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}
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