File: constant-hoisting-and.ll

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (19 lines) | stat: -rw-r--r-- 523 bytes parent folder | download | duplicates (28)
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
}