File: select-mask.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 (17 lines) | stat: -rw-r--r-- 544 bytes parent folder | download | duplicates (5) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; RUN: llc -march=sparc < %s

;; getBooleanContents on Sparc used to claim that no bits mattered
;; other than the first for SELECT. Thus, the 'trunc' got eliminated
;; as redundant. But, cmp does NOT ignore the other bits!

; CHECK-LABEL: select_mask:
; CHECK: ldub [%o0], [[R:%[goli][0-7]]]
; CHECK: and [[R]], 1, [[V:%[goli][0-7]]]
; CHECK: cmp [[V]], 0
define i32 @select_mask(ptr %this) {
entry:
  %bf.load2 = load i8, ptr %this, align 4
  %bf.cast5 = trunc i8 %bf.load2 to i1
  %cond = select i1 %bf.cast5, i32 2, i32 0
  ret i32 %cond
}