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