1 ; RUN: opt < %s -basicaa -gvn -S | FileCheck %s 2 ; This test is checking that (a) this doesn't crash, and (b) we don't 3 ; conclude the value of %tmp17 is available in bb1.bb15_crit_edge. 4 ; rdar://9429882 5 6 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 7 target triple = "x86_64-apple-macosx10.7.0" 8 9 define i1 @rb_intern() nounwind ssp { 10 ; CHECK: @rb_intern 11 12 bb: 13 %tmp = alloca i8*, align 8 14 store i8* null, i8** %tmp, align 8 15 store i8 undef, i8* null, align 536870912 16 br label %bb1 17 18 bb1: 19 br i1 undef, label %bb3, label %bb15 20 21 ; CHECK: bb1: 22 ; CHECK: %tmp16 = phi i8* [ getelementptr (i8* null, i64 undef), %bb10 ], [ null, %bb ] 23 24 ; CHECK: bb1.bb15_crit_edge: 25 ; CHECK: %tmp17.pre = load i8* %tmp16, align 1 26 27 bb3: 28 call void @isalnum() 29 br i1 undef, label %bb10, label %bb5 30 31 bb5: 32 br i1 undef, label %bb10, label %bb6 33 34 bb6: 35 %tmp7 = load i8** %tmp, align 8 36 %tmp8 = load i8* %tmp7, align 1 37 %tmp9 = zext i8 %tmp8 to i64 38 br i1 undef, label %bb15, label %bb10 39 40 bb10: 41 %tmp11 = load i8** %tmp, align 8 42 %tmp12 = load i8* %tmp11, align 1 43 %tmp13 = zext i8 %tmp12 to i64 44 %tmp14 = getelementptr inbounds i8* null, i64 undef 45 store i8* %tmp14, i8** %tmp, align 8 46 br label %bb1 47 48 bb15: 49 %tmp16 = load i8** %tmp, align 8 50 %tmp17 = load i8* %tmp16, align 1 51 %tmp18 = icmp eq i8 %tmp17, 0 52 br label %bb19 53 54 ; CHECK: bb15: 55 ; CHECK: %tmp17 = phi i8 [ %tmp17.pre, %bb1.bb15_crit_edge ], [ %tmp8, %bb6 ] 56 57 bb19: ; preds = %bb15 58 ret i1 %tmp18 59 } 60 61 declare void @isalnum() nounwind inlinehint ssp 62
