File: pr44541.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (24 lines) | stat: -rw-r--r-- 685 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; 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
}