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new testcase

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llvm-svn: 8882
This commit is contained in:
Chris Lattner 2003-10-05 21:11:57 +00:00
parent 47c12a2771
commit 177e89669f
1 changed files with 21 additions and 0 deletions
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test/Regression/Transforms/Mem2Reg/2003-10-05-DeadPHIInsertion.ll Normal file
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; Mem2reg should not insert dead PHI nodes! The naive algorithm inserts a PHI
; node in L3, even though there is no load of %A in anything dominated by L3.
; RUN: llvm-as < %s | opt -mem2reg | llvm-dis | not grep phi
void %test(int %B, bool %C) {
%A = alloca int
store int %B, int* %A
br bool %C, label %L1, label %L2
L1:
store int %B, int* %A
%D = load int* %A
call void %test(int %D, bool false)
br label %L3
L2:
%E = load int* %A
call void %test(int %E, bool true)
br label %L3
L3:
ret void
}