mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 00:12:50 +01:00
29 lines
852 B
LLVM
29 lines
852 B
LLVM
; All of these ands and shifts should be folded into rlw[i]nm instructions
|
|
; RUN: llc < %s -march=ppc32 -o %t
|
|
; RUN: not grep and %t
|
|
; RUN: not grep srawi %t
|
|
; RUN: not grep srwi %t
|
|
; RUN: not grep slwi %t
|
|
; RUN: grep rlwnm %t | count 1
|
|
; RUN: grep rlwinm %t | count 1
|
|
|
|
define i32 @test1(i32 %X, i32 %Y) {
|
|
entry:
|
|
%tmp = trunc i32 %Y to i8 ; <i8> [#uses=2]
|
|
%tmp1 = shl i32 %X, %Y ; <i32> [#uses=1]
|
|
%tmp2 = sub i32 32, %Y ; <i8> [#uses=1]
|
|
%tmp3 = lshr i32 %X, %tmp2 ; <i32> [#uses=1]
|
|
%tmp4 = or i32 %tmp1, %tmp3 ; <i32> [#uses=1]
|
|
%tmp6 = and i32 %tmp4, 127 ; <i32> [#uses=1]
|
|
ret i32 %tmp6
|
|
}
|
|
|
|
define i32 @test2(i32 %X) {
|
|
entry:
|
|
%tmp1 = lshr i32 %X, 27 ; <i32> [#uses=1]
|
|
%tmp2 = shl i32 %X, 5 ; <i32> [#uses=1]
|
|
%tmp2.masked = and i32 %tmp2, 96 ; <i32> [#uses=1]
|
|
%tmp5 = or i32 %tmp1, %tmp2.masked ; <i32> [#uses=1]
|
|
ret i32 %tmp5
|
|
}
|