File: phi-speculation1.ll

package info (click to toggle)
llvm-toolchain-6.0 1%3A6.0.1-10
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 598,080 kB
  • sloc: cpp: 3,046,253; ansic: 595,057; asm: 271,965; python: 128,926; objc: 106,554; sh: 21,906; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,227; cs: 2,027; xml: 686; php: 212; csh: 117
file content (30 lines) | stat: -rw-r--r-- 639 bytes parent folder | download | duplicates (25)
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
; REQUIRES: asserts
; RUN: opt < %s -mergefunc -stats -disable-output 2>&1 | not grep "functions merged"

define i32 @foo1(i32 %x) {
entry:
  %A = add i32 %x, 1
  %B = call i32 @foo1(i32 %A)
  br label %loop
loop:
  %C = phi i32 [%B, %entry], [%D, %loop]
  %D = add i32 %x, 2
  %E = icmp ugt i32 %D, 10000
  br i1 %E, label %loopexit, label %loop
loopexit:
  ret i32 %D
}

define i32 @foo2(i32 %x) {
entry:
  %0 = add i32 %x, 1
  %1 = call i32 @foo2(i32 %0)
  br label %loop
loop:
  %2 = phi i32 [%1, %entry], [%3, %loop]
  %3 = add i32 %2, 2
  %4 = icmp ugt i32 %3, 10000
  br i1 %4, label %loopexit, label %loop
loopexit:
  ret i32 %3
}