File: select-gep.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (26 lines) | stat: -rw-r--r-- 828 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
26
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s

%ST = type { i8, i8 }

define ptr @test1(ptr %x, ptr %y) nounwind {
; CHECK-LABEL: @test1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq ptr [[X:%.*]], null
; CHECK-NEXT:    [[INCDEC_PTR:%.*]] = getelementptr [[ST:%.*]], ptr [[X]], i32 0, i32 1
; CHECK-NEXT:    [[INCDEC_PTR_Y:%.*]] = select i1 [[CMP]], ptr [[INCDEC_PTR]], ptr [[Y:%.*]]
; CHECK-NEXT:    ret ptr [[INCDEC_PTR_Y]]
;
entry:
  %cmp = icmp eq ptr %x, null
  br i1 %cmp, label %if.then, label %if.end

if.then:
  %incdec.ptr = getelementptr %ST, ptr %x, i32 0, i32 1
  br label %if.end

if.end:
  %x.addr = phi ptr [ %incdec.ptr, %if.then ], [ %y, %entry ]
  ret ptr %x.addr

}