File: masked-iv.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (28 lines) | stat: -rw-r--r-- 779 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
22
23
24
25
26
27
28
 
; RUN: opt < %s -indvars -S | FileCheck %s

; Indvars should do the IV arithmetic in the canonical IV type (i64),
; and only use one truncation.

define void @foo(i64* %A, i64* %B, i64 %n, i64 %a, i64 %s) nounwind {
; CHECK-LABEL: @foo(
; CHECK-NOT: trunc
; CHECK: and
; CHECK-NOT: and
entry:
	%t0 = icmp sgt i64 %n, 0		; <i1> [#uses=1]
	br i1 %t0, label %bb.preheader, label %return

bb.preheader:		; preds = %entry
	br label %bb

bb:		; preds = %bb, %bb.preheader
	%i.01 = phi i64 [ %t6, %bb ], [ %a, %bb.preheader ]		; <i64> [#uses=3]
	%t1 = and i64 %i.01, 255		; <i64> [#uses=1]
	%t2 = getelementptr i64, i64* %A, i64 %t1		; <i64*> [#uses=1]
	store i64 %i.01, i64* %t2, align 8
	%t6 = add i64 %i.01, %s		; <i64> [#uses=1]
	br label %bb

return:		; preds = %entry
	ret void
}