File: exit_compare_live_range.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (21 lines) | stat: -rw-r--r-- 722 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; Make sure that the compare instruction occurs after the increment to avoid
; having overlapping live ranges that result in copies.  We want the setcc 
; instruction immediately before the conditional branch.
;
; RUN: opt -S -loop-reduce < %s | FileCheck %s

define void @foo(ptr %D, i32 %E) {
entry:
	br label %no_exit
no_exit:		; preds = %no_exit, %entry
	%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ]		; <i32> [#uses=1]
	store volatile float 0.000000e+00, ptr %D
	%indvar.next = add i32 %indvar, 1		; <i32> [#uses=2]
; CHECK: icmp
; CHECK-NEXT: br i1
	%exitcond = icmp eq i32 %indvar.next, %E		; <i1> [#uses=1]
	br i1 %exitcond, label %loopexit, label %no_exit
loopexit:		; preds = %no_exit
	ret void
}