| ; RUN: opt < %s -S -instcombine | FileCheck %s |
| |
| ; Derived from gcc.c-torture/execute/frame-address.c |
| |
| ; CHECK-LABEL: @func( |
| ; CHECK: return: |
| ; CHECK-NOT: ret i32 0 |
| ; CHECK: ret i32 %retval |
| |
| define i32 @func(i8* %c, i8* %f) nounwind uwtable readnone noinline ssp { |
| entry: |
| %d = alloca i8, align 1 |
| store i8 0, i8* %d, align 1 |
| %cmp = icmp ugt i8* %d, %c |
| br i1 %cmp, label %if.else, label %if.then |
| |
| if.then: ; preds = %entry |
| %cmp2 = icmp ule i8* %d, %f |
| %not.cmp1 = icmp uge i8* %c, %f |
| %.cmp2 = and i1 %cmp2, %not.cmp1 |
| %land.ext = zext i1 %.cmp2 to i32 |
| br label %return |
| |
| if.else: ; preds = %entry |
| %cmp5 = icmp uge i8* %d, %f |
| %not.cmp3 = icmp ule i8* %c, %f |
| %.cmp5 = and i1 %cmp5, %not.cmp3 |
| %land.ext7 = zext i1 %.cmp5 to i32 |
| br label %return |
| |
| return: ; preds = %if.else, %if.then |
| %retval.0 = phi i32 [ %land.ext, %if.then ], [ %land.ext7, %if.else ] |
| ret i32 %retval.0 |
| } |
| |