1; RUN: opt < %s -passes=instcombine,mem2reg,simplifycfg -simplifycfg-require-and-preserve-domtree=1 | \ 2; RUN: llvm-dis | grep -v store | not grep "i32 1" 3 4; Test to make sure that instcombine does not accidentally propagate the load 5; into the PHI, which would break the program. 6 7define i32 @test(i1 %C) { 8entry: 9 %X = alloca i32 ; <ptr> [#uses=3] 10 %X2 = alloca i32 ; <ptr> [#uses=2] 11 store i32 1, ptr %X 12 store i32 2, ptr %X2 13 br i1 %C, label %cond_true.i, label %cond_continue.i 14 15cond_true.i: ; preds = %entry 16 br label %cond_continue.i 17 18cond_continue.i: ; preds = %cond_true.i, %entry 19 %mem_tmp.i.0 = phi ptr [ %X, %cond_true.i ], [ %X2, %entry ] ; <ptr> [#uses=1] 20 store i32 3, ptr %X 21 %tmp.3 = load i32, ptr %mem_tmp.i.0 ; <i32> [#uses=1] 22 ret i32 %tmp.3 23} 24 25 26