| ; Test multiplications between an i64 and a sign-extended i16 on z14. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s |
| |
| declare i64 @foo() |
| |
| ; Check MGH with no displacement. |
| define i64 @f1(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: mgh %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %b = load i16, ptr %src |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check the high end of the aligned MGH range. |
| define i64 @f2(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: mgh %r2, 524286(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16, ptr %src, i64 262143 |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check the next word up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f3(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: agfi %r3, 524288 |
| ; CHECK: mgh %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16, ptr %src, i64 262144 |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check the high end of the negative aligned MGH range. |
| define i64 @f4(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: mgh %r2, -2(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16, ptr %src, i64 -1 |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check the low end of the MGH range. |
| define i64 @f5(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: mgh %r2, -524288(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16, ptr %src, i64 -262144 |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check the next word down, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define i64 @f6(i64 %a, ptr %src) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: agfi %r3, -524290 |
| ; CHECK: mgh %r2, 0(%r3) |
| ; CHECK: br %r14 |
| %ptr = getelementptr i16, ptr %src, i64 -262145 |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |
| ; Check that MGH allows an index. |
| define i64 @f7(i64 %a, i64 %src, i64 %index) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: mgh %r2, 524284({{%r4,%r3|%r3,%r4}}) |
| ; CHECK: br %r14 |
| %add1 = add i64 %src, %index |
| %add2 = add i64 %add1, 524284 |
| %ptr = inttoptr i64 %add2 to ptr |
| %b = load i16, ptr %ptr |
| %bext = sext i16 %b to i64 |
| %mul = mul i64 %a, %bext |
| ret i64 %mul |
| } |
| |