File: strcmp-4.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (25 lines) | stat: -rw-r--r-- 980 bytes parent folder | download | duplicates (5) 
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
; TODO: Test that ...
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

declare i32 @strcmp(ptr, ptr)

@s9 = constant [10 x i8] c"123456789\00"


; Fold strcmp(C ? s3 : s5, s3) to C ? 0 : 1.

define i32 @fold_strcmp_s3_x_s4_s3(i1 %C) {
; CHECK-LABEL: @fold_strcmp_s3_x_s4_s3(
; CHECK-NEXT:    [[PTR:%.*]] = select i1 [[C:%.*]], ptr getelementptr inbounds ([10 x i8], ptr @s9, i64 0, i64 6), ptr getelementptr inbounds ([10 x i8], ptr @s9, i64 0, i64 5)
; CHECK-NEXT:    [[CMP:%.*]] = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) [[PTR]], ptr noundef nonnull dereferenceable(4) getelementptr inbounds ([10 x i8], ptr @s9, i64 0, i64 6))
; CHECK-NEXT:    ret i32 [[CMP]]
;

  %ps3 = getelementptr [10 x i8], ptr @s9, i64 0, i64 6
  %ps4 = getelementptr [10 x i8], ptr @s9, i64 0, i64 5

  %ptr = select i1 %C, ptr %ps3, ptr %ps4
  %cmp = call i32 @strcmp(ptr %ptr, ptr %ps3)
  ret i32 %cmp
}