1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
4 ; Verify that backwards propagation of a mask does not affect
5 ; nodes with multiple result values. In both tests, the stored
6 ; 32-bit value should be masked to an 8-bit number (and 255).
8 @b = local_unnamed_addr global i32 918, align 4
9 @d = local_unnamed_addr global i32 8089, align 4
10 @c = common local_unnamed_addr global i32 0, align 4
11 @a = common local_unnamed_addr global i32 0, align 4
13 define void @PR37667() {
14 ; CHECK-LABEL: PR37667:
16 ; CHECK-NEXT: movl {{.*}}(%rip), %eax
17 ; CHECK-NEXT: xorl %edx, %edx
18 ; CHECK-NEXT: divl {{.*}}(%rip)
19 ; CHECK-NEXT: orl {{.*}}(%rip), %edx
20 ; CHECK-NEXT: movzbl %dl, %eax
21 ; CHECK-NEXT: movl %eax, {{.*}}(%rip)
23 %t0 = load i32, i32* @c, align 4
24 %t1 = load i32, i32* @b, align 4
25 %t2 = load i32, i32* @d, align 4
26 %rem = urem i32 %t1, %t2
27 %or = or i32 %rem, %t0
28 %conv1 = and i32 %or, 255
29 store i32 %conv1, i32* @a, align 4
33 define void @PR37060() {
34 ; CHECK-LABEL: PR37060:
36 ; CHECK-NEXT: movl $-1, %eax
38 ; CHECK-NEXT: idivl {{.*}}(%rip)
39 ; CHECK-NEXT: xorl {{.*}}(%rip), %edx
40 ; CHECK-NEXT: movzbl %dl, %eax
41 ; CHECK-NEXT: movl %eax, {{.*}}(%rip)
43 %t0 = load i32, i32* @c, align 4
44 %rem = srem i32 -1, %t0
45 %t2 = load i32, i32* @b, align 4
46 %xor = xor i32 %t2, %rem
47 %conv3 = and i32 %xor, 255
48 store i32 %conv3, i32* @a, align 4