1 ; Test 16-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 i16 @f1(i16 *%src, i16 %b) {
17 ; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3
18 ; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0
19 ; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]])
20 ; CHECK: [[LABEL:\.[^:]*]]:
21 ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
22 ; CHECK: nr [[ROT]], %r3
23 ; CHECK: xilf [[ROT]], 4294901760
24 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
25 ; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]])
26 ; CHECK: jlh [[LABEL]]
27 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
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
39 ; CHECK-SHIFT2: sll %r3, 16
40 ; CHECK-SHIFT2: oill %r3, 65535
42 ; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
45 ; CHECK-SHIFT2: br %r14
46 %res = atomicrmw nand i16 *%src, i16 %b seq_cst
50 ; Check the minimum signed value. We AND the rotated word with 0x8000ffff.
51 define i16 @f2(i16 *%src) {
53 ; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3
54 ; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0
55 ; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]])
56 ; CHECK: [[LABEL:\.[^:]*]]:
57 ; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
58 ; CHECK: nilh [[ROT]], 32768
59 ; CHECK: xilf [[ROT]], 4294901760
60 ; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
61 ; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]])
62 ; CHECK: jlh [[LABEL]]
63 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
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
75 ; CHECK-SHIFT2: br %r14
76 %res = atomicrmw nand i16 *%src, i16 -32768 seq_cst
80 ; Check NANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfffeffff.
81 define i16 @f3(i16 *%src) {
83 ; CHECK: nilh [[ROT]], 65534
84 ; CHECK: xilf [[ROT]], 4294901760
88 ; CHECK-SHIFT1: br %r14
90 ; CHECK-SHIFT2: br %r14
91 %res = atomicrmw nand i16 *%src, i16 -2 seq_cst
95 ; Check ANDs of 1. We AND the rotated word with 0x0001ffff.
96 define i16 @f4(i16 *%src) {
98 ; CHECK: nilh [[ROT]], 1
99 ; CHECK: xilf [[ROT]], 4294901760
103 ; CHECK-SHIFT1: br %r14
105 ; CHECK-SHIFT2: br %r14
106 %res = atomicrmw nand i16 *%src, i16 1 seq_cst
110 ; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
111 define i16 @f5(i16 *%src) {
113 ; CHECK: nilh [[ROT]], 32767
114 ; CHECK: xilf [[ROT]], 4294901760
118 ; CHECK-SHIFT1: br %r14
120 ; CHECK-SHIFT2: br %r14
121 %res = atomicrmw nand i16 *%src, i16 32767 seq_cst
125 ; Check NANDs of a large unsigned value. We AND the rotated word with
127 define i16 @f6(i16 *%src) {
129 ; CHECK: nilh [[ROT]], 65533
130 ; CHECK: xilf [[ROT]], 4294901760
134 ; CHECK-SHIFT1: br %r14
136 ; CHECK-SHIFT2: br %r14
137 %res = atomicrmw nand i16 *%src, i16 65533 seq_cst