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1; RUN: opt < %s -passes='function(instcombine),function(mem2reg)' -S | grep "%A = alloca" 2; RUN: opt < %s -passes='function(instcombine),function(mem2reg)' -S | \3; RUN: not grep "%B = alloca"4; END.5 6; Ensure that instcombine doesn't sink the loads in entry/cond_true into 7; cond_next. Doing so prevents mem2reg from promoting the B alloca.8 9define i32 @test2(i32 %C) {10entry:11 %A = alloca i3212 %B = alloca i3213 %tmp = call i32 (...) @bar( ptr %A ) ; <i32> [#uses=0]14 %T = load i32, ptr %A ; <i32> [#uses=1]15 %tmp2 = icmp eq i32 %C, 0 ; <i1> [#uses=1]16 br i1 %tmp2, label %cond_next, label %cond_true17 18cond_true: ; preds = %entry19 store i32 123, ptr %B20 call i32 @test2( i32 123 ) ; <i32>:0 [#uses=0]21 %T1 = load i32, ptr %B ; <i32> [#uses=1]22 br label %cond_next23 24cond_next: ; preds = %cond_true, %entry25 %tmp1.0 = phi i32 [ %T1, %cond_true ], [ %T, %entry ] ; <i32> [#uses=1]26 %tmp7 = call i32 (...) @baq( ) ; <i32> [#uses=0]27 %tmp8 = call i32 (...) @baq( ) ; <i32> [#uses=0]28 %tmp9 = call i32 (...) @baq( ) ; <i32> [#uses=0]29 %tmp10 = call i32 (...) @baq( ) ; <i32> [#uses=0]30 %tmp11 = call i32 (...) @baq( ) ; <i32> [#uses=0]31 %tmp12 = call i32 (...) @baq( ) ; <i32> [#uses=0]32 %tmp13 = call i32 (...) @baq( ) ; <i32> [#uses=0]33 %tmp14 = call i32 (...) @baq( ) ; <i32> [#uses=0]34 %tmp15 = call i32 (...) @baq( ) ; <i32> [#uses=0]35 %tmp16 = call i32 (...) @baq( ) ; <i32> [#uses=0]36 %tmp17 = call i32 (...) @baq( ) ; <i32> [#uses=0]37 %tmp18 = call i32 (...) @baq( ) ; <i32> [#uses=0]38 %tmp19 = call i32 (...) @baq( ) ; <i32> [#uses=0]39 %tmp20 = call i32 (...) @baq( ) ; <i32> [#uses=0]40 ret i32 %tmp1.041}42 43declare i32 @bar(...)44 45declare i32 @baq(...)46