1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
2 ; Test the three-operand form of 64-bit addition.
4 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
6 declare i64 @foo(i64, i64, i64)
9 define i64 @f1(i64 %dummy, i64 %a, i64 %b, ptr %flag) {
12 ; CHECK-NEXT: algrk %r2, %r3, %r4
14 ; CHECK-NEXT: risbg %r0, %r0, 63, 191, 35
15 ; CHECK-NEXT: stg %r0, 0(%r5)
17 %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
18 %val = extractvalue {i64, i1} %t, 0
19 %obit = extractvalue {i64, i1} %t, 1
20 %ext = zext i1 %obit to i64
21 store i64 %ext, ptr %flag
25 ; Check using the overflow result for a branch.
26 define i64 @f2(i64 %dummy, i64 %a, i64 %b) {
29 ; CHECK-NEXT: algrk %r2, %r3, %r4
30 ; CHECK-NEXT: bler %r14
31 ; CHECK-NEXT: .LBB1_1: # %call
32 ; CHECK-NEXT: lghi %r2, 0
33 ; CHECK-NEXT: jg foo@PLT
34 %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
35 %val = extractvalue {i64, i1} %t, 0
36 %obit = extractvalue {i64, i1} %t, 1
37 br i1 %obit, label %call, label %exit
40 %res = tail call i64 @foo(i64 0, i64 %a, i64 %b)
47 ; ... and the same with the inverted direction.
48 define i64 @f3(i64 %dummy, i64 %a, i64 %b) {
51 ; CHECK-NEXT: algrk %r2, %r3, %r4
52 ; CHECK-NEXT: bnler %r14
53 ; CHECK-NEXT: .LBB2_1: # %call
54 ; CHECK-NEXT: lghi %r2, 0
55 ; CHECK-NEXT: jg foo@PLT
56 %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
57 %val = extractvalue {i64, i1} %t, 0
58 %obit = extractvalue {i64, i1} %t, 1
59 br i1 %obit, label %exit, label %call
62 %res = tail call i64 @foo(i64 0, i64 %a, i64 %b)
69 ; Check that we can still use ALGR in obvious cases.
70 define i64 @f4(i64 %a, i64 %b, ptr %flag) {
73 ; CHECK-NEXT: algr %r2, %r3
75 ; CHECK-NEXT: risbg %r0, %r0, 63, 191, 35
76 ; CHECK-NEXT: stg %r0, 0(%r4)
78 %t = call {i64, i1} @llvm.uadd.with.overflow.i64(i64 %a, i64 %b)
79 %val = extractvalue {i64, i1} %t, 0
80 %obit = extractvalue {i64, i1} %t, 1
81 %ext = zext i1 %obit to i64
82 store i64 %ext, ptr %flag
86 declare {i64, i1} @llvm.uadd.with.overflow.i64(i64, i64) nounwind readnone