File: loop-hoist.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 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 (27 lines) | stat: -rw-r--r-- 917 bytes parent folder | download | duplicates (20)
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
; LSR should hoist the load from the "Arr" stub out of the loop.

; RUN: llc < %s -relocation-model=dynamic-no-pic -mtriple=i686-apple-darwin8.7.2 | FileCheck %s

; CHECK: _foo:
; CHECK:    L_Arr$non_lazy_ptr
; CHECK: LBB0_1:

@Arr = external global [0 x i32]		; <[0 x i32]*> [#uses=1]

define void @foo(i32 %N.in, i32 %x) nounwind {
entry:
	%N = bitcast i32 %N.in to i32		; <i32> [#uses=1]
	br label %cond_true

cond_true:		; preds = %cond_true, %entry
	%indvar = phi i32 [ %x, %entry ], [ %indvar.next, %cond_true ]		; <i32> [#uses=2]
	%i.0.0 = bitcast i32 %indvar to i32		; <i32> [#uses=2]
	%tmp = getelementptr [0 x i32], [0 x i32]* @Arr, i32 0, i32 %i.0.0		; <i32*> [#uses=1]
	store i32 %i.0.0, i32* %tmp
	%indvar.next = add i32 %indvar, 1		; <i32> [#uses=2]
	%exitcond = icmp eq i32 %indvar.next, %N		; <i1> [#uses=1]
	br i1 %exitcond, label %return, label %cond_true

return:		; preds = %cond_true
	ret void
}