File: shift-codegen.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (27 lines) | stat: -rw-r--r-- 805 bytes parent folder | download | duplicates (2) 
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
 
; RUN: llc < %s -relocation-model=static -march=x86 | \
; RUN:   grep {shll	\$3} | count 2

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

target triple = "i686-apple-darwin8"
@Y = weak global i32 0          ; <i32*> [#uses=1]
@X = weak global i32 0          ; <i32*> [#uses=2]


define void @fn1() {
entry:
        %tmp = load i32* @Y             ; <i32> [#uses=1]
        %tmp1 = shl i32 %tmp, 3         ; <i32> [#uses=1]
        %tmp2 = load i32* @X            ; <i32> [#uses=1]
        %tmp3 = or i32 %tmp1, %tmp2             ; <i32> [#uses=1]
        store i32 %tmp3, i32* @X
        ret void
}

define i32 @fn2(i32 %X, i32 %Y) {
entry:
        %tmp2 = shl i32 %Y, 3           ; <i32> [#uses=1]
        %tmp4 = or i32 %tmp2, %X                ; <i32> [#uses=1]
        ret i32 %tmp4
}