File: hoist-pr22005.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (30 lines) | stat: -rw-r--r-- 832 bytes parent folder | download | duplicates (18)
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
; RUN: opt -gvn-hoist -S < %s | FileCheck %s
target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Check that all "sub" expressions are hoisted.
; CHECK-LABEL: @fun
; CHECK: sub i64
; CHECK-NOT: sub i64

define i64 @fun(i8* %out, i8* %end) {
  %1 = icmp ult i8* %out, %end
  br i1 %1, label %2, label %6

; <label>:2                                       ; preds = %0
  %3 = ptrtoint i8* %end to i64
  %4 = ptrtoint i8* %out to i64
  %5 = sub i64 %3, %4
  br label %10

; <label>:6                                       ; preds = %0
  %7 = ptrtoint i8* %out to i64
  %8 = ptrtoint i8* %end to i64
  %9 = sub i64 %8, %7
  br label %10

; <label>:10                                      ; preds = %6, %2
  %.in = phi i64 [ %5, %2 ], [ %9, %6 ]
  %11 = add i64 %.in, 257
  ret i64 %11
}