llvm-6502/test/Transforms/InstCombine/2004-09-20-BadLoadCombine2.llx
2004-09-20 10:14:27 +00:00

25 lines
640 B
Plaintext

; RUN: llvm-as < %s | opt -instcombine -mem2reg -simplifycfg | llvm-dis | \
; RUN: grep -v store | not grep 'int 1'
; Test to make sure that instcombine does not accidentally propagate the load
; into the PHI, which would break the program.
int %test(bool %C) {
entry:
%X = alloca int
%X2 = alloca int
store int 1, int* %X
store int 2, int* %X2
br bool %C, label %cond_true.i, label %cond_continue.i
cond_true.i:
br label %cond_continue.i
cond_continue.i:
%mem_tmp.i.0 = phi int* [ %X, %cond_true.i ], [ %X2, %entry ]
store int 3, int* %X
%tmp.3 = load int* %mem_tmp.i.0
ret int %tmp.3
}