| ; Test 64-bit XORs in which the second operand is variable. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check XGR. |
| define i64 @f1(i64 %a, i64 %b) { |
| ; CHECK: f1: |
| ; CHECK: xgr %r2, %r3 |
| ; CHECK: br %r14 |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check XG with no displacement. |
| define i64 @f2(i64 %a, i64 *%src) { |
| ; CHECK: f2: |
| ; CHECK: xg %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %b = load i64 *%src |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check the high end of the aligned XG range. |
| define i64 @f3(i64 %a, i64 *%src) { |
| ; CHECK: f3: |
| ; CHECK: xg %r2, 524280(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%src, i64 65535 |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check the next doubleword up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f4(i64 %a, i64 *%src) { |
| ; CHECK: f4: |
| ; CHECK: agfi %r3, 524288 |
| ; CHECK: xg %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%src, i64 65536 |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check the high end of the negative aligned XG range. |
| define i64 @f5(i64 %a, i64 *%src) { |
| ; CHECK: f5: |
| ; CHECK: xg %r2, -8(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%src, i64 -1 |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check the low end of the XG range. |
| define i64 @f6(i64 %a, i64 *%src) { |
| ; CHECK: f6: |
| ; CHECK: xg %r2, -524288(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%src, i64 -65536 |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check the next doubleword down, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f7(i64 %a, i64 *%src) { |
| ; CHECK: f7: |
| ; CHECK: agfi %r3, -524296 |
| ; CHECK: xg %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%src, i64 -65537 |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |
| |
| ; Check that XG allows an index. |
| define i64 @f8(i64 %a, i64 %src, i64 %index) { |
| ; CHECK: f8: |
| ; CHECK: xg %r2, 524280({{%r4,%r3|%r3,%r4}}) |
| ; CHECK: br %r14 |
| %add1 = add i64 %src, %index |
| %add2 = add i64 %add1, 524280 |
| %ptr = inttoptr i64 %add2 to i64 * |
| %b = load i64 *%ptr |
| %xor = xor i64 %a, %b |
| ret i64 %xor |
| } |