1 ; Test 64-bit atomic XORs. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s 4 5 ; Check XORs of a variable. 6 define i64 @f1(i64 %dummy, i64 *%src, i64 %b) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: lg %r2, 0(%r3) 9 ; CHECK: [[LABEL:\.[^ ]*]]: 10 ; CHECK: lgr %r0, %r2 11 ; CHECK: xgr %r0, %r4 12 ; CHECK: csg %r2, %r0, 0(%r3) 13 ; CHECK: jl [[LABEL]] 14 ; CHECK: br %r14 15 %res = atomicrmw xor i64 *%src, i64 %b seq_cst 16 ret i64 %res 17 } 18 19 ; Check the lowest useful XILF value. 20 define i64 @f2(i64 %dummy, i64 *%src) { 21 ; CHECK-LABEL: f2: 22 ; CHECK: lg %r2, 0(%r3) 23 ; CHECK: [[LABEL:\.[^ ]*]]: 24 ; CHECK: lgr %r0, %r2 25 ; CHECK: xilf %r0, 1 26 ; CHECK: csg %r2, %r0, 0(%r3) 27 ; CHECK: jl [[LABEL]] 28 ; CHECK: br %r14 29 %res = atomicrmw xor i64 *%src, i64 1 seq_cst 30 ret i64 %res 31 } 32 33 ; Check the high end of the XILF range. 34 define i64 @f3(i64 %dummy, i64 *%src) { 35 ; CHECK-LABEL: f3: 36 ; CHECK: xilf %r0, 4294967295 37 ; CHECK: br %r14 38 %res = atomicrmw xor i64 *%src, i64 4294967295 seq_cst 39 ret i64 %res 40 } 41 42 ; Check the lowest useful XIHF value, which is one greater than above. 43 define i64 @f4(i64 %dummy, i64 *%src) { 44 ; CHECK-LABEL: f4: 45 ; CHECK: xihf %r0, 1 46 ; CHECK: br %r14 47 %res = atomicrmw xor i64 *%src, i64 4294967296 seq_cst 48 ret i64 %res 49 } 50 51 ; Check the next value up, which must use a register. (We could use 52 ; combinations of XIH* and XIL* instead, but that isn't implemented.) 53 define i64 @f5(i64 %dummy, i64 *%src) { 54 ; CHECK-LABEL: f5: 55 ; CHECK: xgr 56 ; CHECK: br %r14 57 %res = atomicrmw xor i64 *%src, i64 4294967297 seq_cst 58 ret i64 %res 59 } 60 61 ; Check the high end of the XIHF range. 62 define i64 @f6(i64 %dummy, i64 *%src) { 63 ; CHECK-LABEL: f6: 64 ; CHECK: xihf %r0, 4294967295 65 ; CHECK: br %r14 66 %res = atomicrmw xor i64 *%src, i64 -4294967296 seq_cst 67 ret i64 %res 68 } 69 70 ; Check the next value up, which must use a register. 71 define i64 @f7(i64 %dummy, i64 *%src) { 72 ; CHECK-LABEL: f7: 73 ; CHECK: xgr 74 ; CHECK: br %r14 75 %res = atomicrmw xor i64 *%src, i64 -4294967295 seq_cst 76 ret i64 %res 77 } 78
