File: constant-hoisting-and.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 (19 lines) | stat: -rw-r--r-- 523 bytes parent folder | download | duplicates (27)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
; RUN: llc < %s -O3 -mtriple=x86_64-- |FileCheck %s
define i64 @foo(i1 %z, i64 %data1, i64 %data2)
{
; If constant 4294967294 is hoisted to a variable, then we won't be able to use
; the implicit zero extension of 32-bit operations to handle the AND.
entry:
  %val1 = and i64 %data1, 4294967294
  br i1 %z, label %End, label %L_val2

; CHECK: andl    $-2, {{.*}}
; CHECK: andl    $-2, {{.*}}
L_val2:
  %val2 = and i64 %data2, 4294967294
  br label %End

End:
  %p1 = phi i64 [%val1,%entry], [%val2,%L_val2]
  ret i64 %p1
}