| ; Test moves of integers to 2-byte memory locations. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check the low end of the unsigned range. |
| define void @f1(i16 *%ptr) { |
| ; CHECK: f1: |
| ; CHECK: mvhhi 0(%r2), 0 |
| ; CHECK: br %r14 |
| store i16 0, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the high end of the signed range. |
| define void @f2(i16 *%ptr) { |
| ; CHECK: f2: |
| ; CHECK: mvhhi 0(%r2), 32767 |
| ; CHECK: br %r14 |
| store i16 32767, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the next value up. |
| define void @f3(i16 *%ptr) { |
| ; CHECK: f3: |
| ; CHECK: mvhhi 0(%r2), -32768 |
| ; CHECK: br %r14 |
| store i16 -32768, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the high end of the unsigned range. |
| define void @f4(i16 *%ptr) { |
| ; CHECK: f4: |
| ; CHECK: mvhhi 0(%r2), -1 |
| ; CHECK: br %r14 |
| store i16 65535, i16 *%ptr |
| ret void |
| } |
| |
| ; Check -1. |
| define void @f5(i16 *%ptr) { |
| ; CHECK: f5: |
| ; CHECK: mvhhi 0(%r2), -1 |
| ; CHECK: br %r14 |
| store i16 -1, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the low end of the signed range. |
| define void @f6(i16 *%ptr) { |
| ; CHECK: f6: |
| ; CHECK: mvhhi 0(%r2), -32768 |
| ; CHECK: br %r14 |
| store i16 -32768, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the next value down. |
| define void @f7(i16 *%ptr) { |
| ; CHECK: f7: |
| ; CHECK: mvhhi 0(%r2), 32767 |
| ; CHECK: br %r14 |
| store i16 -32769, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the high end of the MVHHI range. |
| define void @f8(i16 *%a) { |
| ; CHECK: f8: |
| ; CHECK: mvhhi 4094(%r2), 42 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16 *%a, i64 2047 |
| store i16 42, i16 *%ptr |
| ret void |
| } |
| |
| ; Check the next halfword up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f9(i16 *%a) { |
| ; CHECK: f9: |
| ; CHECK: aghi %r2, 4096 |
| ; CHECK: mvhhi 0(%r2), 42 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16 *%a, i64 2048 |
| store i16 42, i16 *%ptr |
| ret void |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define void @f10(i16 *%a) { |
| ; CHECK: f10: |
| ; CHECK: aghi %r2, -2 |
| ; CHECK: mvhhi 0(%r2), 42 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16 *%a, i64 -1 |
| store i16 42, i16 *%ptr |
| ret void |
| } |
| |
| ; Check that MVHHI does not allow an index |
| define void @f11(i64 %src, i64 %index) { |
| ; CHECK: f11: |
| ; CHECK: agr %r2, %r3 |
| ; CHECK: mvhhi 0(%r2), 42 |
| ; CHECK: br %r14 |
| %add = add i64 %src, %index |
| %ptr = inttoptr i64 %add to i16 * |
| store i16 42, i16 *%ptr |
| ret void |
| } |