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https://github.com/c64scene-ar/llvm-6502.git
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28beeeac4d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41097 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
2.3 KiB
LLVM
63 lines
2.3 KiB
LLVM
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
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; RUN: grep {call.*llvm.bswap} | count 5
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; END.
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uint %test1(uint %i) {
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%tmp1 = shr uint %i, ubyte 24 ; <uint> [#uses=1]
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%tmp3 = shr uint %i, ubyte 8 ; <uint> [#uses=1]
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%tmp4 = and uint %tmp3, 65280 ; <uint> [#uses=1]
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%tmp5 = or uint %tmp1, %tmp4 ; <uint> [#uses=1]
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%tmp7 = shl uint %i, ubyte 8 ; <uint> [#uses=1]
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%tmp8 = and uint %tmp7, 16711680 ; <uint> [#uses=1]
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%tmp9 = or uint %tmp5, %tmp8 ; <uint> [#uses=1]
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%tmp11 = shl uint %i, ubyte 24 ; <uint> [#uses=1]
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%tmp12 = or uint %tmp9, %tmp11 ; <uint> [#uses=1]
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ret uint %tmp12
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}
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uint %test2(uint %arg) {
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%tmp2 = shl uint %arg, ubyte 24 ; <uint> [#uses=1]
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%tmp4 = shl uint %arg, ubyte 8 ; <uint> [#uses=1]
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%tmp5 = and uint %tmp4, 16711680 ; <uint> [#uses=1]
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%tmp6 = or uint %tmp2, %tmp5 ; <uint> [#uses=1]
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%tmp8 = shr uint %arg, ubyte 8 ; <uint> [#uses=1]
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%tmp9 = and uint %tmp8, 65280 ; <uint> [#uses=1]
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%tmp10 = or uint %tmp6, %tmp9 ; <uint> [#uses=1]
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%tmp12 = shr uint %arg, ubyte 24 ; <uint> [#uses=1]
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%tmp14 = or uint %tmp10, %tmp12 ; <uint> [#uses=1]
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ret uint %tmp14
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}
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ushort %test3(ushort %s) {
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%tmp2 = shr ushort %s, ubyte 8
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%tmp4 = shl ushort %s, ubyte 8
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%tmp5 = or ushort %tmp2, %tmp4
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ret ushort %tmp5
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}
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ushort %test4(ushort %s) {
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%tmp2 = shr ushort %s, ubyte 8
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%tmp4 = shl ushort %s, ubyte 8
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%tmp5 = or ushort %tmp4, %tmp2
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ret ushort %tmp5
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}
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; unsigned short test5(unsigned short a) {
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; return ((a & 0xff00) >> 8 | (a & 0x00ff) << 8);
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;}
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ushort %test5(ushort %a) {
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%tmp = zext ushort %a to int
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%tmp1 = and int %tmp, 65280
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%tmp2 = ashr int %tmp1, ubyte 8
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%tmp2 = trunc int %tmp2 to short
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%tmp4 = and int %tmp, 255
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%tmp5 = shl int %tmp4, ubyte 8
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%tmp5 = trunc int %tmp5 to short
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%tmp = or short %tmp2, %tmp5
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%tmp6 = bitcast short %tmp to ushort
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%tmp6 = zext ushort %tmp6 to int
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%retval = trunc int %tmp6 to ushort
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ret ushort %retval
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}
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