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llvm-mirror/test/Transforms/GVN/rle-semidominated.ll
Chris Lattner 22cfa14eed make GVN try to rename inputs to the resultant replaced values, which
cleans up the generated code a bit.  This should have the added benefit of
not randomly renaming functions/globals like my previous patch did. :)

llvm-svn: 61023
2008-12-15 03:46:38 +00:00

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323 B
LLVM

; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep {DEAD = phi i32 }
define i32 @main(i32* %p) {
block1:
%z = load i32* %p
br i1 true, label %block2, label %block3
block2:
br label %block4
block3:
%b = bitcast i32 0 to i32
store i32 %b, i32* %p
br label %block4
block4:
%DEAD = load i32* %p
ret i32 %DEAD
}