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New testcase for folding bswaps into i16/i32 loads and stores. 

llvm-svn: 29088
This commit is contained in:
Chris Lattner 2006-07-10 20:53:53 +00:00
parent b7845d69db
commit a0449c2936
1 changed files with 42 additions and 0 deletions
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llvm/test/Regression/CodeGen/PowerPC/bswap-load-store.ll Normal file
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; RUN: llvm-as < %s | llc -march=ppc32 | grep 'stwbrx\|lwbrx\|sthbrx\|lhbrx' | wc -l | grep 4 &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep rlwinm &&
; RUN: llvm-as < %s | llc -march=ppc32 | not grep rlwimi &&
; RUN: llvm-as < %s | llc -march=ppc64 | grep 'stwbrx\|lwbrx\|sthbrx\|lhbrx' | wc -l | grep 4 &&
; RUN: llvm-as < %s | llc -march=ppc64 | not grep rlwinm &&
; RUN: llvm-as < %s | llc -march=ppc64 | not grep rlwimi
void %STWBRX(uint %i, sbyte* %ptr, int %off) {
%tmp1 = getelementptr sbyte* %ptr, int %off
%tmp1 = cast sbyte* %tmp1 to uint*
%tmp13 = tail call uint %llvm.bswap.i32(uint %i)
store uint %tmp13, uint* %tmp1
ret void
}
uint %LWBRX(sbyte* %ptr, int %off) {
%tmp1 = getelementptr sbyte* %ptr, int %off
%tmp1 = cast sbyte* %tmp1 to uint*
%tmp = load uint* %tmp1
%tmp14 = tail call uint %llvm.bswap.i32( uint %tmp )
ret uint %tmp14
}
void %STHBRX(ushort %s, sbyte* %ptr, int %off) {
%tmp1 = getelementptr sbyte* %ptr, int %off
%tmp1 = cast sbyte* %tmp1 to ushort*
%tmp5 = call ushort %llvm.bswap.i16( ushort %s )
store ushort %tmp5, ushort* %tmp1
ret void
}
ushort %LHBRX(sbyte* %ptr, int %off) {
%tmp1 = getelementptr sbyte* %ptr, int %off
%tmp1 = cast sbyte* %tmp1 to ushort*
%tmp = load ushort* %tmp1
%tmp6 = call ushort %llvm.bswap.i16(ushort %tmp)
ret ushort %tmp6
}
declare uint %llvm.bswap.i32(uint)
declare ushort %llvm.bswap.i16(ushort)