File: multi-edges.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (32 lines) | stat: -rw-r--r-- 959 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
28
29
30
31
32
 
; RUN: opt -basic-aa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
;
; Makes sure we have a sane model if both successors of some block is the same
; block.

define i32 @foo(i1 %a) {
entry:
  %0 = alloca i32, align 4
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: store i32 4
  store i32 4, i32* %0
  br i1 %a, label %Loop.Body, label %Loop.End

Loop.Body:
; CHECK: 4 = MemoryPhi({entry,1},{Loop.End,3})
; CHECK-NEXT: 2 = MemoryDef(4)
; CHECK-NEXT: store i32 5
  store i32 5, i32* %0, align 4
  br i1 %a, label %Loop.End, label %Loop.End ; WhyDoWeEvenHaveThatLever.gif

Loop.End:
; CHECK: 3 = MemoryPhi({entry,1},{Loop.Body,2},{Loop.Body,2})
; CHECK-NEXT: MemoryUse(3)
; CHECK-NEXT: %1 = load
  %1 = load i32, i32* %0, align 4
  %2 = icmp eq i32 5, %1
  br i1 %2, label %Ret, label %Loop.Body

Ret:
  ret i32 %1
}