File: signed-comparison.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 (25 lines) | stat: -rw-r--r-- 757 bytes parent folder | download | duplicates (14) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

; Convert the zext+slt into a simple ult.

define i1 @scalar_zext_slt(i16 %t4) {
; CHECK-LABEL: @scalar_zext_slt(
; CHECK-NEXT:    [[T6:%.*]] = icmp ult i16 [[T4:%.*]], 500
; CHECK-NEXT:    ret i1 [[T6]]
;
  %t5 = zext i16 %t4 to i32
  %t6 = icmp slt i32 %t5, 500
  ret i1 %t6
}

define <4 x i1> @vector_zext_slt(<4 x i16> %t4) {
; CHECK-LABEL: @vector_zext_slt(
; CHECK-NEXT:    [[T6:%.*]] = icmp ult <4 x i16> [[T4:%.*]], <i16 500, i16 0, i16 501, i16 -1>
; CHECK-NEXT:    ret <4 x i1> [[T6]]
;
  %t5 = zext <4 x i16> %t4 to <4 x i32>
  %t6 = icmp slt <4 x i32> %t5, <i32 500, i32 0, i32 501, i32 65535>
  ret <4 x i1> %t6
}