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new testcase, bswaps should be eliminated. 

llvm-svn: 32005
This commit is contained in:
Chris Lattner 2006-11-29 05:00:14 +00:00
parent 8facb43593
commit e7f83dcf4b
1 changed files with 26 additions and 0 deletions
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26
llvm/test/Regression/Transforms/InstCombine/bswap-fold.ll Normal file
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep ret | wc -l | grep 3 &&
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'call.*bswap'
bool %test1(ushort %tmp2) {
%tmp10 = call ushort %llvm.bswap.i16( ushort %tmp2 )
%tmp = seteq ushort %tmp10, 1
ret bool %tmp
}
bool %test2(uint %tmp) {
%tmp34 = tail call uint %llvm.bswap.i32( uint %tmp )
%tmp = seteq uint %tmp34, 1
ret bool %tmp
}
declare uint %llvm.bswap.i32(uint)
bool %test3(ulong %tmp) {
%tmp34 = tail call ulong %llvm.bswap.i64( ulong %tmp )
%tmp = seteq ulong %tmp34, 1
ret bool %tmp
}
declare ulong %llvm.bswap.i64(ulong)
declare ushort %llvm.bswap.i16(ushort)