| ; Test that the case of (64 - shift) used by a shift/rotate instruction is |
| ; implemented with an lcr. This should also work for any multiple of 64. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s |
| |
| define i64 @f1(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: sllg %r2, %r2, 0(%r1) |
| %sub = sub i64 64, %sh |
| %shl = shl i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f2(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: srag %r2, %r2, 0(%r1) |
| %sub = sub i64 64, %sh |
| %shl = ashr i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f3(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: srlg %r2, %r2, 0(%r1) |
| %sub = sub i64 64, %sh |
| %shl = lshr i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f4(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: rllg %r2, %r2, 0(%r1) |
| %shr = lshr i64 %in, %sh |
| %sub = sub i64 64, %sh |
| %shl = shl i64 %in, %sub |
| %or = or i64 %shl, %shr |
| ret i64 %or |
| } |
| |
| define i64 @f5(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: sllg %r2, %r2, 0(%r1) |
| %sub = sub i64 128, %sh |
| %shl = shl i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f6(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: srag %r2, %r2, 0(%r1) |
| %sub = sub i64 256, %sh |
| %shl = ashr i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f7(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: srlg %r2, %r2, 0(%r1) |
| %sub = sub i64 512, %sh |
| %shl = lshr i64 %in, %sub |
| ret i64 %shl |
| } |
| |
| define i64 @f8(i64 %in, i64 %sh) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: lcr %r1, %r3 |
| ; CHECK: srlg %r0, %r2, 0(%r3) |
| ; CHECK: sllg %r2, %r2, 0(%r1) |
| ; CHECK: ogr %r2, %r0 |
| %shr = lshr i64 %in, %sh |
| %sub = sub i64 1024, %sh |
| %shl = shl i64 %in, %sub |
| %or = or i64 %shl, %shr |
| ret i64 %or |
| } |