File: overflows.ll

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (27 lines) | stat: -rw-r--r-- 846 bytes parent folder | download | duplicates (2) 
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
26
27
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s

define i1 @test_overflow_sub_coefficients(i8 %x, i64 %y) {
; CHECK-LABEL: define i1 @test_overflow_sub_coefficients
; CHECK-SAME: (i8 [[X:%.*]], i64 [[Y:%.*]]) {
; CHECK-NEXT:  bb:
; CHECK-NEXT:    [[ZEXT:%.*]] = zext i8 [[X]] to i64
; CHECK-NEXT:    [[SHL:%.*]] = shl nuw nsw i64 [[ZEXT]], 63
; CHECK-NEXT:    [[ICMP:%.*]] = icmp uge i64 [[SHL]], [[Y]]
; CHECK-NEXT:    ret i1 [[ICMP]]
;
bb:
  %zext = zext i8 %x to i64
  %shl = shl nuw nsw i64 %zext, 63
  %icmp = icmp uge i64 %shl, %y
  ret i1 %icmp
}

define i1 @test_overflow_in_negate_constraint(i8 %x, i64 %y) {
bb:
  %zext = zext i8 %x to i64
  %shl = shl nuw nsw i64 %zext, 63
  %icmp = icmp uge i64 %y, %shl
  ret i1 %icmp
}