1 ; Test 16-bit atomic ANDs. 2 ; 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 6 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 11 ; tested in CHECK. 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) { 16 ; CHECK-LABEL: f1: 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: jl [[LABEL]] 26 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]]) 27 ; CHECK: br %r14 28 ; 29 ; CHECK-SHIFT1-LABEL: f1: 30 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 31 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] 32 ; CHECK-SHIFT1: rll 33 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) 34 ; CHECK-SHIFT1: rll 35 ; CHECK-SHIFT1: br %r14 36 ; 37 ; CHECK-SHIFT2-LABEL: f1: 38 ; CHECK-SHIFT2: sll %r3, 16 39 ; CHECK-SHIFT2: oill %r3, 65535 40 ; CHECK-SHIFT2: rll 41 ; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3 42 ; CHECK-SHIFT2: rll 43 ; CHECK-SHIFT2: rll 44 ; CHECK-SHIFT2: br %r14 45 %res = atomicrmw and i16 *%src, i16 %b seq_cst 46 ret i16 %res 47 } 48 49 ; Check the minimum signed value. We AND the rotated word with 0x8000ffff. 50 define i16 @f2(i16 *%src) { 51 ; CHECK-LABEL: f2: 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: jl [[LABEL]] 61 ; CHECK: rll %r2, [[OLD]], 16([[SHIFT]]) 62 ; CHECK: br %r14 63 ; 64 ; CHECK-SHIFT1-LABEL: f2: 65 ; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3 66 ; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]] 67 ; CHECK-SHIFT1: rll 68 ; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]]) 69 ; CHECK-SHIFT1: rll 70 ; CHECK-SHIFT1: br %r14 71 ; 72 ; CHECK-SHIFT2-LABEL: f2: 73 ; CHECK-SHIFT2: br %r14 74 %res = atomicrmw and i16 *%src, i16 -32768 seq_cst 75 ret i16 %res 76 } 77 78 ; Check ANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfffeffff. 79 define i16 @f3(i16 *%src) { 80 ; CHECK-LABEL: f3: 81 ; CHECK: nilh [[ROT]], 65534 82 ; CHECK: br %r14 83 ; 84 ; CHECK-SHIFT1-LABEL: f3: 85 ; CHECK-SHIFT1: br %r14 86 ; CHECK-SHIFT2-LABEL: f3: 87 ; CHECK-SHIFT2: br %r14 88 %res = atomicrmw and i16 *%src, i16 -2 seq_cst 89 ret i16 %res 90 } 91 92 ; Check ANDs of 1. We AND the rotated word with 0x0001ffff. 93 define i16 @f4(i16 *%src) { 94 ; CHECK-LABEL: f4: 95 ; CHECK: nilh [[ROT]], 1 96 ; CHECK: br %r14 97 ; 98 ; CHECK-SHIFT1-LABEL: f4: 99 ; CHECK-SHIFT1: br %r14 100 ; CHECK-SHIFT2-LABEL: f4: 101 ; CHECK-SHIFT2: br %r14 102 %res = atomicrmw and i16 *%src, i16 1 seq_cst 103 ret i16 %res 104 } 105 106 ; Check the maximum signed value. We AND the rotated word with 0x7fffffff. 107 define i16 @f5(i16 *%src) { 108 ; CHECK-LABEL: f5: 109 ; CHECK: nilh [[ROT]], 32767 110 ; CHECK: br %r14 111 ; 112 ; CHECK-SHIFT1-LABEL: f5: 113 ; CHECK-SHIFT1: br %r14 114 ; CHECK-SHIFT2-LABEL: f5: 115 ; CHECK-SHIFT2: br %r14 116 %res = atomicrmw and i16 *%src, i16 32767 seq_cst 117 ret i16 %res 118 } 119 120 ; Check ANDs of a large unsigned value. We AND the rotated word with 121 ; 0xfffdffff. 122 define i16 @f6(i16 *%src) { 123 ; CHECK-LABEL: f6: 124 ; CHECK: nilh [[ROT]], 65533 125 ; CHECK: br %r14 126 ; 127 ; CHECK-SHIFT1-LABEL: f6: 128 ; CHECK-SHIFT1: br %r14 129 ; CHECK-SHIFT2-LABEL: f6: 130 ; CHECK-SHIFT2: br %r14 131 %res = atomicrmw and i16 *%src, i16 65533 seq_cst 132 ret i16 %res 133 } 134
