1 ; Test 16-bit atomic ANDs.
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 AND 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 i16 @f1(i16 *%src, i16 %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: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
24 ; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
25 ; CHECK: j{{g?}}lh [[LABEL]]
26 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
30 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
31 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
33 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
35 ; CHECK-SHIFT1: br %r14
38 ; CHECK-SHIFT2: sll %r3, 16
39 ; CHECK-SHIFT2: oill %r3, 65535
41 ; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
44 ; CHECK-SHIFT2: br %r14
45 %res = atomicrmw and i16 *%src, i16 %b seq_cst
49 ; Check the minimum signed value. We AND the rotated word with 0x8000ffff.
50 define i16 @f2(i16 *%src) {
52 ; CHECK: sllg [[SHIFT:%r[1-9]+]], %r2, 3
53 ; CHECK: nill %r2, 65532
54 ; CHECK: l [[OLD:%r[0-9]+]], 0(%r2)
55 ; CHECK: [[LABEL:\.[^:]*]]:
56 ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
57 ; CHECK: nilh [[ROT]], 32768
58 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
59 ; CHECK: cs [[OLD]], [[NEW]], 0(%r2)
60 ; CHECK: j{{g?}}lh [[LABEL]]
61 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
65 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
66 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
68 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
70 ; CHECK-SHIFT1: br %r14
73 ; CHECK-SHIFT2: br %r14
74 %res = atomicrmw and i16 *%src, i16 -32768 seq_cst
78 ; Check ANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfffeffff.
79 define i16 @f3(i16 *%src) {
81 ; CHECK: nilh [[ROT]], 65534
85 ; CHECK-SHIFT1: br %r14
87 ; CHECK-SHIFT2: br %r14
88 %res = atomicrmw and i16 *%src, i16 -2 seq_cst
92 ; Check ANDs of 1. We AND the rotated word with 0x0001ffff.
93 define i16 @f4(i16 *%src) {
95 ; CHECK: nilh [[ROT]], 1
99 ; CHECK-SHIFT1: br %r14
101 ; CHECK-SHIFT2: br %r14
102 %res = atomicrmw and i16 *%src, i16 1 seq_cst
106 ; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
107 define i16 @f5(i16 *%src) {
109 ; CHECK: nilh [[ROT]], 32767
113 ; CHECK-SHIFT1: br %r14
115 ; CHECK-SHIFT2: br %r14
116 %res = atomicrmw and i16 *%src, i16 32767 seq_cst
120 ; Check ANDs of a large unsigned value. We AND the rotated word with
122 define i16 @f6(i16 *%src) {
124 ; CHECK: nilh [[ROT]], 65533
128 ; CHECK-SHIFT1: br %r14
130 ; CHECK-SHIFT2: br %r14
131 %res = atomicrmw and i16 *%src, i16 65533 seq_cst