1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s | FileCheck %s
; RUN: llc -relocation-model=pic < %s | FileCheck %s --check-prefix=PIC
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@foo = external global i8, align 1, !absolute_symbol !0
define void @bar(i8* %x) {
; CHECK-LABEL: bar:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: testb $foo, (%rdi)
; CHECK-NEXT: je .LBB0_1
; CHECK-NEXT: # %bb.2: # %if.then
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: jmp xf@PLT # TAILCALL
; CHECK-NEXT: .LBB0_1: # %if.end
; CHECK-NEXT: retq
;
; PIC-LABEL: bar:
; PIC: # %bb.0: # %entry
; PIC-NEXT: testb $foo, (%rdi)
; PIC-NEXT: je .LBB0_1
; PIC-NEXT: # %bb.2: # %if.then
; PIC-NEXT: xorl %eax, %eax
; PIC-NEXT: jmp xf@PLT # TAILCALL
; PIC-NEXT: .LBB0_1: # %if.end
; PIC-NEXT: retq
entry:
%0 = load i8, i8* %x, align 1
%conv = sext i8 %0 to i32
%and = and i32 %conv, sext (i8 ptrtoint (i8* @foo to i8) to i32)
%tobool = icmp eq i32 %and, 0
br i1 %tobool, label %if.end, label %if.then
if.then: ; preds = %entry
tail call void (...) @xf()
br label %if.end
if.end: ; preds = %entry, %if.then
ret void
}
declare void @xf(...)
!0 = !{i32 0, i32 256}
|
