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Testcase for better rotate left and mask support 

llvm-svn: 30579
This commit is contained in:
Nate Begeman 2006-09-22 05:49:57 +00:00
parent fe95123f58
commit 9007f5a48d
1 changed files with 30 additions and 0 deletions
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30
llvm/test/Regression/CodeGen/PowerPC/rlwinm2.ll Normal file
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; All of these ands and shifts should be folded into rlw[i]nm instructions
; RUN: llvm-as < %s | llc -march=ppc32 | not grep and &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep srawi &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep srwi &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep slwi &&
; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwnm | wc -l | grep 1 &&
; RUN: llvm-as < %s | llc -march=ppc32 | grep rlwinm | wc -l | grep 1
implementation ; Functions:
uint %test1(uint %X, int %Y) {
entry:
%tmp = cast int %Y to ubyte ; <ubyte> [#uses=2]
%tmp1 = shl uint %X, ubyte %tmp ; <uint> [#uses=1]
%tmp2 = sub ubyte 32, %tmp ; <ubyte> [#uses=1]
%tmp3 = shr uint %X, ubyte %tmp2 ; <uint> [#uses=1]
%tmp4 = or uint %tmp1, %tmp3 ; <uint> [#uses=1]
%tmp6 = and uint %tmp4, 127 ; <uint> [#uses=1]
ret uint %tmp6
}
uint %test2(uint %X) {
entry:
%tmp1 = shr uint %X, ubyte 27 ; <uint> [#uses=1]
%tmp2 = shl uint %X, ubyte 5 ; <uint> [#uses=1]
%tmp2.masked = and uint %tmp2, 96 ; <uint> [#uses=1]
%tmp5 = or uint %tmp1, %tmp2.masked ; <uint> [#uses=1]
ret uint %tmp5
}