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832254e1c2
This feature is needed in order to support shifts of more than 255 bits on large integer types. This changes the syntax for llvm assembly to make shl, ashr and lshr instructions look like a binary operator: shl i32 %X, 1 instead of shl i32 %X, i8 1 Additionally, this should help a few passes perform additional optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8
45 lines
1.5 KiB
LLVM
45 lines
1.5 KiB
LLVM
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine -disable-output &&
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; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
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; RUN: not grep '(and\|xor\|add\|shl\|shr)'
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int %test1(int %x) {
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%tmp.1 = and int %x, 65535 ; <int> [#uses=1]
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%tmp.2 = xor int %tmp.1, -32768 ; <int> [#uses=1]
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%tmp.3 = add int %tmp.2, 32768 ; <int> [#uses=1]
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ret int %tmp.3
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}
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int %test2(int %x) {
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%tmp.1 = and int %x, 65535 ; <int> [#uses=1]
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%tmp.2 = xor int %tmp.1, 32768 ; <int> [#uses=1]
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%tmp.3 = add int %tmp.2, -32768 ; <int> [#uses=1]
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ret int %tmp.3
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}
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int %test3(ushort %P) {
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%tmp.1 = cast ushort %P to int ; <int> [#uses=1]
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%tmp.4 = xor int %tmp.1, 32768 ; <int> [#uses=1]
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%tmp.5 = add int %tmp.4, -32768 ; <int> [#uses=1]
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ret int %tmp.5
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}
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uint %test4(ushort %P) {
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%tmp.1 = cast ushort %P to uint ; <uint> [#uses=1]
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%tmp.4 = xor uint %tmp.1, 32768 ; <uint> [#uses=1]
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%tmp.5 = add uint %tmp.4, 4294934528 ; <uint> [#uses=1]
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ret uint %tmp.5
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}
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int %test5(int %x) {
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%tmp.1 = and int %x, 254
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%tmp.2 = xor int %tmp.1, 128
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%tmp.3 = add int %tmp.2, -128
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ret int %tmp.3
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}
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int %test6(int %x) {
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%tmp.2 = shl int %x, ubyte 16 ; <int> [#uses=1]
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%tmp.4 = shr int %tmp.2, ubyte 16 ; <int> [#uses=1]
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ret int %tmp.4
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}
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