| ; Test 64-bit atomic XORs, z196 version. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s |
| |
| ; Check XOR of a variable. |
| define i64 @f1(i64 %dummy, i64 *%src, i64 %b) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: laxg %r2, %r4, 0(%r3) |
| ; CHECK: br %r14 |
| %res = atomicrmw xor i64 *%src, i64 %b seq_cst |
| ret i64 %res |
| } |
| |
| ; Check XOR of 1, which needs a temporary. |
| define i64 @f2(i64 %dummy, i64 *%src) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: lghi [[TMP:%r[0-5]]], 1 |
| ; CHECK: laxg %r2, [[TMP]], 0(%r3) |
| ; CHECK: br %r14 |
| %res = atomicrmw xor i64 *%src, i64 1 seq_cst |
| ret i64 %res |
| } |
| |
| ; Check the high end of the LAXG range. |
| define i64 @f3(i64 %dummy, i64 *%src, i64 %b) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: laxg %r2, %r4, 524280(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 65535 |
| %res = atomicrmw xor i64 *%ptr, i64 %b seq_cst |
| ret i64 %res |
| } |
| |
| ; Check the next doubleword up, which needs separate address logic. |
| define i64 @f4(i64 %dummy, i64 *%src, i64 %b) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: agfi %r3, 524288 |
| ; CHECK: laxg %r2, %r4, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 65536 |
| %res = atomicrmw xor i64 *%ptr, i64 %b seq_cst |
| ret i64 %res |
| } |
| |
| ; Check the low end of the LAXG range. |
| define i64 @f5(i64 %dummy, i64 *%src, i64 %b) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: laxg %r2, %r4, -524288(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 -65536 |
| %res = atomicrmw xor i64 *%ptr, i64 %b seq_cst |
| ret i64 %res |
| } |
| |
| ; Check the next doubleword down, which needs separate address logic. |
| define i64 @f6(i64 %dummy, i64 *%src, i64 %b) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: agfi %r3, -524296 |
| ; CHECK: laxg %r2, %r4, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 -65537 |
| %res = atomicrmw xor i64 *%ptr, i64 %b seq_cst |
| ret i64 %res |
| } |