File: rlwimi2.ll

package info (click to toggle)
llvm 2.2-12
  • links: PTS, VCS
  • area: main
  • in suites: lenny
  • size: 38,648 kB
  • ctags: 28,258
  • sloc: cpp: 215,479; sh: 12,132; ansic: 10,002; yacc: 5,525; perl: 2,352; ml: 1,580; makefile: 956; pascal: 718; lex: 602; exp: 320; ada: 193; lisp: 160; csh: 116; objc: 59; python: 59; tcl: 20
file content (31 lines) | stat: -rw-r--r-- 1,397 bytes parent folder | download
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
; All of these ands and shifts should be folded into rlwimi's
; RUN: llvm-upgrade < %s | llvm-as | llc -march=ppc32 -o %t -f
; RUN: grep rlwimi %t | count 3
; RUN: grep srwi   %t | count 1
; RUN: not grep slwi %t

implementation   ; Functions:

ushort %test1(uint %srcA, uint %srcB, uint %alpha) {
entry:
	%tmp.1 = shl uint %srcA, ubyte 15		; <uint> [#uses=1]
	%tmp.4 = and uint %tmp.1, 32505856		; <uint> [#uses=1]
	%tmp.6 = and uint %srcA, 31775		; <uint> [#uses=1]
	%tmp.7 = or uint %tmp.4, %tmp.6		; <uint> [#uses=1]
	%tmp.9 = shl uint %srcB, ubyte 15		; <uint> [#uses=1]
	%tmp.12 = and uint %tmp.9, 32505856		; <uint> [#uses=1]
	%tmp.14 = and uint %srcB, 31775		; <uint> [#uses=1]
	%tmp.15 = or uint %tmp.12, %tmp.14		; <uint> [#uses=1]
	%tmp.18 = mul uint %tmp.7, %alpha		; <uint> [#uses=1]
	%tmp.20 = sub uint 32, %alpha		; <uint> [#uses=1]
	%tmp.22 = mul uint %tmp.15, %tmp.20		; <uint> [#uses=1]
	%tmp.23 = add uint %tmp.22, %tmp.18		; <uint> [#uses=2]
	%tmp.27 = shr uint %tmp.23, ubyte 5		; <uint> [#uses=1]
	%tmp.28 = cast uint %tmp.27 to ushort		; <ushort> [#uses=1]
	%tmp.29 = and ushort %tmp.28, 31775		; <ushort> [#uses=1]
	%tmp.33 = shr uint %tmp.23, ubyte 20		; <uint> [#uses=1]
	%tmp.34 = cast uint %tmp.33 to ushort		; <ushort> [#uses=1]
	%tmp.35 = and ushort %tmp.34, 992		; <ushort> [#uses=1]
	%tmp.36 = or ushort %tmp.29, %tmp.35		; <ushort> [#uses=1]
	ret ushort %tmp.36
}