| ; Test ANDs of a constant into a byte of memory. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check the lowest useful constant, expressed as a signed integer. |
| define void @f1(ptr %ptr) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: ni 0(%r2), 1 |
| ; CHECK: br %r14 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, -255 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the highest useful constant, expressed as a signed integer. |
| define void @f2(ptr %ptr) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: ni 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, -2 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the lowest useful constant, expressed as an unsigned integer. |
| define void @f3(ptr %ptr) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: ni 0(%r2), 1 |
| ; CHECK: br %r14 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 1 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the highest useful constant, expressed as a unsigned integer. |
| define void @f4(ptr %ptr) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: ni 0(%r2), 254 |
| ; CHECK: br %r14 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 254 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the high end of the NI range. |
| define void @f5(ptr %src) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: ni 4095(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 4095 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the next byte up, which should use NIY instead of NI. |
| define void @f6(ptr %src) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: niy 4096(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 4096 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the high end of the NIY range. |
| define void @f7(ptr %src) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: niy 524287(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 524287 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the next byte up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f8(ptr %src) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: agfi %r2, 524288 |
| ; CHECK: ni 0(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 524288 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the high end of the negative NIY range. |
| define void @f9(ptr %src) { |
| ; CHECK-LABEL: f9: |
| ; CHECK: niy -1(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 -1 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the low end of the NIY range. |
| define void @f10(ptr %src) { |
| ; CHECK-LABEL: f10: |
| ; CHECK: niy -524288(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 -524288 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check the next byte down, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f11(ptr %src) { |
| ; CHECK-LABEL: f11: |
| ; CHECK: agfi %r2, -524289 |
| ; CHECK: ni 0(%r2), 127 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i8, ptr %src, i64 -524289 |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check that NI does not allow an index |
| define void @f12(i64 %src, i64 %index) { |
| ; CHECK-LABEL: f12: |
| ; CHECK: agr %r2, %r3 |
| ; CHECK: ni 4095(%r2), 127 |
| ; CHECK: br %r14 |
| %add1 = add i64 %src, %index |
| %add2 = add i64 %add1, 4095 |
| %ptr = inttoptr i64 %add2 to ptr |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |
| |
| ; Check that NIY does not allow an index |
| define void @f13(i64 %src, i64 %index) { |
| ; CHECK-LABEL: f13: |
| ; CHECK: agr %r2, %r3 |
| ; CHECK: niy 4096(%r2), 127 |
| ; CHECK: br %r14 |
| %add1 = add i64 %src, %index |
| %add2 = add i64 %add1, 4096 |
| %ptr = inttoptr i64 %add2 to ptr |
| %val = load i8, ptr %ptr |
| %and = and i8 %val, 127 |
| store i8 %and, ptr %ptr |
| ret void |
| } |