| ; Test 64-bit additions of constants to memory. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check additions of 1. |
| define void @f1(i64 *%ptr) { |
| ; CHECK: f1: |
| ; CHECK: agsi 0(%r2), 1 |
| ; CHECK: br %r14 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 127 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the high end of the constant range. |
| define void @f2(i64 *%ptr) { |
| ; CHECK: f2: |
| ; CHECK: agsi 0(%r2), 127 |
| ; CHECK: br %r14 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 127 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the next constant up, which must use an addition and a store. |
| ; Both LG/AGHI and LGHI/AG would be OK. |
| define void @f3(i64 *%ptr) { |
| ; CHECK: f3: |
| ; CHECK-NOT: agsi |
| ; CHECK: stg %r0, 0(%r2) |
| ; CHECK: br %r14 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 128 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the low end of the constant range. |
| define void @f4(i64 *%ptr) { |
| ; CHECK: f4: |
| ; CHECK: agsi 0(%r2), -128 |
| ; CHECK: br %r14 |
| %val = load i64 *%ptr |
| %add = add i64 %val, -128 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the next value down, with the same comment as f3. |
| define void @f5(i64 *%ptr) { |
| ; CHECK: f5: |
| ; CHECK-NOT: agsi |
| ; CHECK: stg %r0, 0(%r2) |
| ; CHECK: br %r14 |
| %val = load i64 *%ptr |
| %add = add i64 %val, -129 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the high end of the aligned AGSI range. |
| define void @f6(i64 *%base) { |
| ; CHECK: f6: |
| ; CHECK: agsi 524280(%r2), 1 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%base, i64 65535 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 1 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the next doubleword up, which must use separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f7(i64 *%base) { |
| ; CHECK: f7: |
| ; CHECK: agfi %r2, 524288 |
| ; CHECK: agsi 0(%r2), 1 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%base, i64 65536 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 1 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the low end of the AGSI range. |
| define void @f8(i64 *%base) { |
| ; CHECK: f8: |
| ; CHECK: agsi -524288(%r2), 1 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%base, i64 -65536 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 1 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check the next doubleword down, which must use separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f9(i64 *%base) { |
| ; CHECK: f9: |
| ; CHECK: agfi %r2, -524296 |
| ; CHECK: agsi 0(%r2), 1 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64 *%base, i64 -65537 |
| %val = load i64 *%ptr |
| %add = add i64 %val, 1 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |
| |
| ; Check that AGSI does not allow indices. |
| define void @f10(i64 %base, i64 %index) { |
| ; CHECK: f10: |
| ; CHECK: agr %r2, %r3 |
| ; CHECK: agsi 8(%r2), 1 |
| ; CHECK: br %r14 |
| %add1 = add i64 %base, %index |
| %add2 = add i64 %add1, 8 |
| %ptr = inttoptr i64 %add2 to i64 * |
| %val = load i64 *%ptr |
| %add = add i64 %val, 1 |
| store i64 %add, i64 *%ptr |
| ret void |
| } |