1 ; Test 8-bit atomic NANDs.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT1
5 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT2
7 ; Check NAND of a variable.
8 ; - CHECK is for the main loop.
9 ; - CHECK-SHIFT1 makes sure that the negated shift count used by the second
10 ; RLL is set up correctly. The negation is independent of the NILL and L
12 ; - CHECK-SHIFT2 makes sure that %b is shifted into the high part of the word
13 ; before being used, and that the low bits are set to 1. This sequence is
14 ; independent of the other loop prologue instructions.
15 define i8 @f1(i8 *%src, i8 %b) {
17 ; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3
18 ; CHECK: nill %r2, 65532
19 ; CHECK: l [[OLD:%r[0-9]+]], 0(%r2)
20 ; CHECK: [[LABEL:\.[^:]*]]:
21 ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
22 ; CHECK: nr [[ROT]], %r3
23 ; CHECK: xilf [[ROT]], 4278190080
24 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
25 ; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
27 ; CHECK: rll %r2, [[OLD]], 8([[SHIFT]])
30 ; CHECK-SHIFT1-LABEL: f1:
31 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
32 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
34 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
36 ; CHECK-SHIFT1: br %r14
38 ; CHECK-SHIFT2-LABEL: f1:
39 ; CHECK-SHIFT2: sll %r3, 24
40 ; CHECK-SHIFT2: oilf %r3, 16777215
42 ; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
45 ; CHECK-SHIFT2: br %r14
46 %res = atomicrmw nand i8 *%src, i8 %b seq_cst
50 ; Check the minimum signed value. We AND the rotated word with 0x80ffffff.
51 define i8 @f2(i8 *%src) {
53 ; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3
54 ; CHECK: nill %r2, 65532
55 ; CHECK: l [[OLD:%r[0-9]+]], 0(%r2)
56 ; CHECK: [[LABEL:\.[^:]*]]:
57 ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
58 ; CHECK: nilh [[ROT]], 33023
59 ; CHECK: xilf [[ROT]], 4278190080
60 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
61 ; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
63 ; CHECK: rll %r2, [[OLD]], 8([[SHIFT]])
66 ; CHECK-SHIFT1-LABEL: f2:
67 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
68 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
70 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
72 ; CHECK-SHIFT1: br %r14
74 ; CHECK-SHIFT2-LABEL: f2:
75 ; CHECK-SHIFT2: br %r14
76 %res = atomicrmw nand i8 *%src, i8 -128 seq_cst
80 ; Check NANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfeffffff.
81 define i8 @f3(i8 *%src) {
83 ; CHECK: nilh [[ROT]], 65279
84 ; CHECK: xilf [[ROT]], 4278190080
87 ; CHECK-SHIFT1-LABEL: f3:
88 ; CHECK-SHIFT1: br %r14
89 ; CHECK-SHIFT2-LABEL: f3:
90 ; CHECK-SHIFT2: br %r14
91 %res = atomicrmw nand i8 *%src, i8 -2 seq_cst
95 ; Check NANDs of 1. We AND the rotated word with 0x01ffffff.
96 define i8 @f4(i8 *%src) {
98 ; CHECK: nilh [[ROT]], 511
99 ; CHECK: xilf [[ROT]], 4278190080
102 ; CHECK-SHIFT1-LABEL: f4:
103 ; CHECK-SHIFT1: br %r14
104 ; CHECK-SHIFT2-LABEL: f4:
105 ; CHECK-SHIFT2: br %r14
106 %res = atomicrmw nand i8 *%src, i8 1 seq_cst
110 ; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
111 define i8 @f5(i8 *%src) {
113 ; CHECK: nilh [[ROT]], 32767
114 ; CHECK: xilf [[ROT]], 4278190080
117 ; CHECK-SHIFT1-LABEL: f5:
118 ; CHECK-SHIFT1: br %r14
119 ; CHECK-SHIFT2-LABEL: f5:
120 ; CHECK-SHIFT2: br %r14
121 %res = atomicrmw nand i8 *%src, i8 127 seq_cst
125 ; Check NANDs of a large unsigned value. We AND the rotated word with
127 define i8 @f6(i8 *%src) {
129 ; CHECK: nilh [[ROT]], 65023
130 ; CHECK: xilf [[ROT]], 4278190080
133 ; CHECK-SHIFT1-LABEL: f6:
134 ; CHECK-SHIFT1: br %r14
135 ; CHECK-SHIFT2-LABEL: f6:
136 ; CHECK-SHIFT2: br %r14
137 %res = atomicrmw nand i8 *%src, i8 253 seq_cst