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
| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
;RUN: llc < %s | FileCheck %s
; This test case failed on legalization of "shl" node. PR29058.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@structMember = external local_unnamed_addr global i64, align 8
define i32 @PR29058(i8 %x, i32 %y) {
; CHECK-LABEL: PR29058:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: testb %dil, %dil
; CHECK-NEXT: movl $2147483646, %eax # imm = 0x7FFFFFFE
; CHECK-NEXT: cmovnel %esi, %eax
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: cmpb $1, %dil
; CHECK-NEXT: sbbb %dl, %dl
; CHECK-NEXT: orb %dl, %cl
; CHECK-NEXT: # kill: def $cl killed $cl killed $ecx
; CHECK-NEXT: shll %cl, %eax
; CHECK-NEXT: movq %rax, {{.*}}(%rip)
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
entry:
%bool_1 = icmp ne i8 %x, 0
%bool_2 = icmp eq i8 %x, 0
%0 = select i1 %bool_2, i32 2147483646, i32 %y
%or_1 = select i1 %bool_1, i32 %y, i32 -1
%shl_1 = shl i32 %0, %or_1
%conv = zext i32 %shl_1 to i64
store i64 %conv, i64* @structMember, align 8
%tmp = select i1 %bool_2, i32 2147483646, i32 %y
%lnot = icmp eq i8 %x, 0
%or_2 = select i1 %lnot, i32 -1, i32 %y
%shl_2 = shl i32 %tmp, %or_2
ret i32 %shl_2
}
|