forked from OSchip/llvm-project
36 lines
1.0 KiB
LLVM
36 lines
1.0 KiB
LLVM
; RUN: opt < %s -S -instcombine | FileCheck %s
|
|
|
|
; Derived from gcc.c-torture/execute/frame-address.c
|
|
|
|
; CHECK: @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
|
|
}
|
|
|