| ; RUN: llc < %s -march=x86 | FileCheck %s |
| %struct._obstack_chunk = type { i8*, %struct._obstack_chunk*, [4 x i8] } |
| %struct.obstack = type { i32, %struct._obstack_chunk*, i8*, i8*, i8*, i32, i32, %struct._obstack_chunk* (...)*, void (...)*, i8*, i8 } |
| @stmt_obstack = external global %struct.obstack ; <%struct.obstack*> [#uses=1] |
| |
| ; This should just not crash. |
| define void @test1() nounwind { |
| entry: |
| br i1 true, label %cond_true, label %cond_next |
| |
| cond_true: ; preds = %entry |
| %new_size.0.i = select i1 false, i32 0, i32 0 ; <i32> [#uses=1] |
| %tmp.i = load i32* bitcast (i8* getelementptr (%struct.obstack* @stmt_obstack, i32 0, i32 10) to i32*) ; <i32> [#uses=1] |
| %tmp.i.upgrd.1 = trunc i32 %tmp.i to i8 ; <i8> [#uses=1] |
| %tmp21.i = and i8 %tmp.i.upgrd.1, 1 ; <i8> [#uses=1] |
| %tmp22.i = icmp eq i8 %tmp21.i, 0 ; <i1> [#uses=1] |
| br i1 %tmp22.i, label %cond_false30.i, label %cond_true23.i |
| |
| cond_true23.i: ; preds = %cond_true |
| ret void |
| |
| cond_false30.i: ; preds = %cond_true |
| %tmp35.i = tail call %struct._obstack_chunk* null( i32 %new_size.0.i ) ; <%struct._obstack_chunk*> [#uses=0] |
| ret void |
| |
| cond_next: ; preds = %entry |
| ret void |
| } |
| |
| |
| |
| define i32 @test2(i16* %P, i16* %Q) nounwind { |
| %A = load i16* %P, align 4 ; <i16> [#uses=11] |
| %C = zext i16 %A to i32 ; <i32> [#uses=1] |
| %D = and i32 %C, 255 ; <i32> [#uses=1] |
| br label %L |
| L: |
| |
| store i16 %A, i16* %Q |
| ret i32 %D |
| |
| ; CHECK: test2: |
| ; CHECK: movl 4(%esp), %eax |
| ; CHECK-NEXT: movzwl (%eax), %ecx |
| |
| } |
| |