1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -passes=instcombine < %s | FileCheck %s
4 ; This test used to cause an infinite combine loop.
6 define i16 @passthru(i16 returned %x) {
7 ; CHECK-LABEL: @passthru(
8 ; CHECK-NEXT: ret i16 [[X:%.*]]
13 define i16 @test(i16 %arg) {
15 ; CHECK-NEXT: [[ZERO:%.*]] = call i16 @passthru(i16 0)
16 ; CHECK-NEXT: [[RET:%.*]] = call i16 @llvm.smax.i16(i16 [[ARG:%.*]], i16 0)
17 ; CHECK-NEXT: ret i16 [[RET]]
19 %zero = call i16 @passthru(i16 0)
20 %sub = sub nuw nsw i16 %arg, %zero
21 %cmp = icmp slt i16 %sub, 0
22 %ret = select i1 %cmp, i16 0, i16 %sub