1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -passes=instcombine < %s | FileCheck %s 3 4; This test used to cause an infinite combine loop. 5 6define i16 @passthru(i16 returned %x) { 7; CHECK-LABEL: @passthru( 8; CHECK-NEXT: ret i16 [[X:%.*]] 9; 10 ret i16 %x 11} 12 13define i16 @test(i16 %arg) { 14; CHECK-LABEL: @test( 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]] 18; 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 23 ret i16 %ret 24} 25