File: shift-codegen.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2~deb10u1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 995,836 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (36 lines) | stat: -rw-r--r-- 929 bytes parent folder | download | duplicates (14) 
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
29
30
31
32
33
34
35
36
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -relocation-model=static -mtriple=i686-unknown-unknown | FileCheck %s

; This should produce two shll instructions, not any lea's.

target triple = "i686-apple-darwin8"
@Y = weak global i32 0
@X = weak global i32 0

define void @fn1() {
; CHECK-LABEL: fn1:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl Y, %eax
; CHECK-NEXT:    shll $3, %eax
; CHECK-NEXT:    orl %eax, X
; CHECK-NEXT:    retl
  %tmp = load i32, i32* @Y
  %tmp1 = shl i32 %tmp, 3
  %tmp2 = load i32, i32* @X
  %tmp3 = or i32 %tmp1, %tmp2
  store i32 %tmp3, i32* @X
  ret void
}

define i32 @fn2(i32 %X, i32 %Y) {
; CHECK-LABEL: fn2:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT:    shll $3, %eax
; CHECK-NEXT:    orl {{[0-9]+}}(%esp), %eax
; CHECK-NEXT:    retl
  %tmp2 = shl i32 %Y, 3
  %tmp4 = or i32 %tmp2, %X
  ret i32 %tmp4
}