| ; Test 64-bit addition in which the second operand is variable. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| declare i64 @foo() |
| |
| ; Check ALGR. |
| define zeroext i1 @f1(i64 %dummy, i64 %a, i64 %b, i64 *%res) { |
| ; CHECK-LABEL: f1: |
| ; CHECK: algr %r3, %r4 |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check using the overflow result for a branch. |
| define void @f2(i64 %dummy, i64 %a, i64 %b, i64 *%res) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: algr %r3, %r4 |
| ; CHECK: stg %r3, 0(%r5) |
| ; CHECK: jgnle foo@PLT |
| ; CHECK: br %r14 |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| br i1 %obit, label %call, label %exit |
| |
| call: |
| tail call i64 @foo() |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; ... and the same with the inverted direction. |
| define void @f3(i64 %dummy, i64 %a, i64 %b, i64 *%res) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: algr %r3, %r4 |
| ; CHECK: stg %r3, 0(%r5) |
| ; CHECK: jgle foo@PLT |
| ; CHECK: br %r14 |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| br i1 %obit, label %exit, label %call |
| |
| call: |
| tail call i64 @foo() |
| br label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; Check ALG with no displacement. |
| define zeroext i1 @f4(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f4: |
| ; CHECK: alg %r3, 0(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %b = load i64, i64 *%src |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check the high end of the aligned ALG range. |
| define zeroext i1 @f5(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f5: |
| ; CHECK: alg %r3, 524280(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 65535 |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check the next doubleword up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define zeroext i1 @f6(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f6: |
| ; CHECK: agfi %r4, 524288 |
| ; CHECK: alg %r3, 0(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 65536 |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check the high end of the negative aligned ALG range. |
| define zeroext i1 @f7(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: alg %r3, -8(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 -1 |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check the low end of the ALG range. |
| define zeroext i1 @f8(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f8: |
| ; CHECK: alg %r3, -524288(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 -65536 |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check the next doubleword down, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define zeroext i1 @f9(i64 %dummy, i64 %a, i64 *%src, i64 *%res) { |
| ; CHECK-LABEL: f9: |
| ; CHECK: agfi %r4, -524296 |
| ; CHECK: alg %r3, 0(%r4) |
| ; CHECK-DAG: stg %r3, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %ptr = getelementptr i64, i64 *%src, i64 -65537 |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check that ALG allows an index. |
| define zeroext i1 @f10(i64 %src, i64 %index, i64 %a, i64 *%res) { |
| ; CHECK-LABEL: f10: |
| ; CHECK: alg %r4, 524280({{%r3,%r2|%r2,%r3}}) |
| ; CHECK-DAG: stg %r4, 0(%r5) |
| ; CHECK-DAG: ipm [[REG:%r[0-5]]] |
| ; CHECK-DAG: risbg %r2, [[REG]], 63, 191, 35 |
| ; CHECK: br %r14 |
| %add1 = add i64 %src, %index |
| %add2 = add i64 %add1, 524280 |
| %ptr = inttoptr i64 %add2 to i64 * |
| %b = load i64, i64 *%ptr |
| %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b) |
| %val = extractvalue {i64, i1} %t, 0 |
| %obit = extractvalue {i64, i1} %t, 1 |
| store i64 %val, i64 *%res |
| ret i1 %obit |
| } |
| |
| ; Check that additions of spilled values can use ALG rather than ALGR. |
| define zeroext i1 @f11(i64 *%ptr0) { |
| ; CHECK-LABEL: f11: |
| ; CHECK: brasl %r14, foo@PLT |
| ; CHECK: alg %r2, 160(%r15) |
| ; CHECK: br %r14 |
| %ptr1 = getelementptr i64, i64 *%ptr0, i64 2 |
| %ptr2 = getelementptr i64, i64 *%ptr0, i64 4 |
| %ptr3 = getelementptr i64, i64 *%ptr0, i64 6 |
| %ptr4 = getelementptr i64, i64 *%ptr0, i64 8 |
| %ptr5 = getelementptr i64, i64 *%ptr0, i64 10 |
| %ptr6 = getelementptr i64, i64 *%ptr0, i64 12 |
| %ptr7 = getelementptr i64, i64 *%ptr0, i64 14 |
| %ptr8 = getelementptr i64, i64 *%ptr0, i64 16 |
| %ptr9 = getelementptr i64, i64 *%ptr0, i64 18 |
| |
| %val0 = load i64, i64 *%ptr0 |
| %val1 = load i64, i64 *%ptr1 |
| %val2 = load i64, i64 *%ptr2 |
| %val3 = load i64, i64 *%ptr3 |
| %val4 = load i64, i64 *%ptr4 |
| %val5 = load i64, i64 *%ptr5 |
| %val6 = load i64, i64 *%ptr6 |
| %val7 = load i64, i64 *%ptr7 |
| %val8 = load i64, i64 *%ptr8 |
| %val9 = load i64, i64 *%ptr9 |
| |
| %ret = call i64 @foo() |
| |
| %t0 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %ret, i64 %val0) |
| %add0 = extractvalue {i64, i1} %t0, 0 |
| %obit0 = extractvalue {i64, i1} %t0, 1 |
| %t1 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add0, i64 %val1) |
| %add1 = extractvalue {i64, i1} %t1, 0 |
| %obit1 = extractvalue {i64, i1} %t1, 1 |
| %res1 = or i1 %obit0, %obit1 |
| %t2 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add1, i64 %val2) |
| %add2 = extractvalue {i64, i1} %t2, 0 |
| %obit2 = extractvalue {i64, i1} %t2, 1 |
| %res2 = or i1 %res1, %obit2 |
| %t3 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add2, i64 %val3) |
| %add3 = extractvalue {i64, i1} %t3, 0 |
| %obit3 = extractvalue {i64, i1} %t3, 1 |
| %res3 = or i1 %res2, %obit3 |
| %t4 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add3, i64 %val4) |
| %add4 = extractvalue {i64, i1} %t4, 0 |
| %obit4 = extractvalue {i64, i1} %t4, 1 |
| %res4 = or i1 %res3, %obit4 |
| %t5 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add4, i64 %val5) |
| %add5 = extractvalue {i64, i1} %t5, 0 |
| %obit5 = extractvalue {i64, i1} %t5, 1 |
| %res5 = or i1 %res4, %obit5 |
| %t6 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add5, i64 %val6) |
| %add6 = extractvalue {i64, i1} %t6, 0 |
| %obit6 = extractvalue {i64, i1} %t6, 1 |
| %res6 = or i1 %res5, %obit6 |
| %t7 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add6, i64 %val7) |
| %add7 = extractvalue {i64, i1} %t7, 0 |
| %obit7 = extractvalue {i64, i1} %t7, 1 |
| %res7 = or i1 %res6, %obit7 |
| %t8 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add7, i64 %val8) |
| %add8 = extractvalue {i64, i1} %t8, 0 |
| %obit8 = extractvalue {i64, i1} %t8, 1 |
| %res8 = or i1 %res7, %obit8 |
| %t9 = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %add8, i64 %val9) |
| %add9 = extractvalue {i64, i1} %t9, 0 |
| %obit9 = extractvalue {i64, i1} %t9, 1 |
| %res9 = or i1 %res8, %obit9 |
| |
| ret i1 %res9 |
| } |
| |
| declare {i64, i1} @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone |
| |
