File: hoist-pr22005.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 (30 lines) | stat: -rw-r--r-- 839 bytes parent folder | download | duplicates (14) 
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 -passes=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(ptr %out, ptr %end) {
  %1 = icmp ult ptr %out, %end
  br i1 %1, label %2, label %6

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

; <label>:6                                       ; preds = %0
  %7 = ptrtoint ptr %out to i64
  %8 = ptrtoint ptr %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
}