| ; RUN: opt < %s -basicaa -gvn -S | FileCheck %s |
| ; This test is checking that (a) this doesn't crash, and (b) we don't |
| ; conclude the value of %tmp17 is available in bb1.bb15_crit_edge. |
| ; rdar://9429882 |
| |
| 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" |
| target triple = "x86_64-apple-macosx10.7.0" |
| |
| define i1 @rb_intern() nounwind ssp { |
| ; CHECK: @rb_intern |
| |
| bb: |
| %tmp = alloca i8*, align 8 |
| store i8* null, i8** %tmp, align 8 |
| store i8 undef, i8* null, align 536870912 |
| br label %bb1 |
| |
| bb1: |
| br i1 undef, label %bb3, label %bb15 |
| |
| ; CHECK: bb1: |
| ; CHECK: %tmp16 = phi i8* [ getelementptr (i8* null, i64 undef), %bb10 ], [ null, %bb ] |
| |
| ; CHECK: bb1.bb15_crit_edge: |
| ; CHECK: %tmp17.pre = load i8* %tmp16, align 1 |
| |
| bb3: |
| call void @isalnum() |
| br i1 undef, label %bb10, label %bb5 |
| |
| bb5: |
| br i1 undef, label %bb10, label %bb6 |
| |
| bb6: |
| %tmp7 = load i8** %tmp, align 8 |
| %tmp8 = load i8* %tmp7, align 1 |
| %tmp9 = zext i8 %tmp8 to i64 |
| br i1 undef, label %bb15, label %bb10 |
| |
| bb10: |
| %tmp11 = load i8** %tmp, align 8 |
| %tmp12 = load i8* %tmp11, align 1 |
| %tmp13 = zext i8 %tmp12 to i64 |
| %tmp14 = getelementptr inbounds i8* null, i64 undef |
| store i8* %tmp14, i8** %tmp, align 8 |
| br label %bb1 |
| |
| bb15: |
| %tmp16 = load i8** %tmp, align 8 |
| %tmp17 = load i8* %tmp16, align 1 |
| %tmp18 = icmp eq i8 %tmp17, 0 |
| br label %bb19 |
| |
| ; CHECK: bb15: |
| ; CHECK: %tmp17 = phi i8 [ %tmp17.pre, %bb1.bb15_crit_edge ], [ %tmp8, %bb6 ] |
| |
| bb19: ; preds = %bb15 |
| ret i1 %tmp18 |
| } |
| |
| declare void @isalnum() nounwind inlinehint ssp |
