1; Test 32-bit atomic XORs. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s 4 5; Check XORs of a variable. 6define i32 @f1(i32 %dummy, i32 *%src, i32 %b) { 7; CHECK-LABEL: f1: 8; CHECK: l %r2, 0(%r3) 9; CHECK: [[LABEL:\.[^ ]*]]: 10; CHECK: lr %r0, %r2 11; CHECK: xr %r0, %r4 12; CHECK: cs %r2, %r0, 0(%r3) 13; CHECK: jl [[LABEL]] 14; CHECK: br %r14 15 %res = atomicrmw xor i32 *%src, i32 %b seq_cst 16 ret i32 %res 17} 18 19; Check the lowest useful constant. 20define i32 @f2(i32 %dummy, i32 *%src) { 21; CHECK-LABEL: f2: 22; CHECK: l %r2, 0(%r3) 23; CHECK: [[LABEL:\.[^ ]*]]: 24; CHECK: lr %r0, %r2 25; CHECK: xilf %r0, 1 26; CHECK: cs %r2, %r0, 0(%r3) 27; CHECK: jl [[LABEL]] 28; CHECK: br %r14 29 %res = atomicrmw xor i32 *%src, i32 1 seq_cst 30 ret i32 %res 31} 32 33; Check an arbitrary constant. 34define i32 @f3(i32 %dummy, i32 *%src) { 35; CHECK-LABEL: f3: 36; CHECK: xilf %r0, 3000000000 37; CHECK: br %r14 38 %res = atomicrmw xor i32 *%src, i32 3000000000 seq_cst 39 ret i32 %res 40} 41 42; Check bitwise negation. 43define i32 @f4(i32 %dummy, i32 *%src) { 44; CHECK-LABEL: f4: 45; CHECK: xilf %r0, 4294967295 46; CHECK: br %r14 47 %res = atomicrmw xor i32 *%src, i32 -1 seq_cst 48 ret i32 %res 49} 50