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https://github.com/c64scene-ar/llvm-6502.git
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191cf943e6
specified opcode and an integer constant right operand. 2. Modified ISD::SHL, ISD::SRL, ISD::SRA to use rlwinm when applied after a mask. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22761 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
1.8 KiB
LLVM
64 lines
1.8 KiB
LLVM
; All of these ands and shifts should be folded into rlwimi's
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; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep and &&
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; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep srawi &&
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; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep srwi &&
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; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | not grep slwi &&
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; RUN: llvm-as < rlwinm.ll | llc -march=ppc32 | grep rlwinm | wc -l | grep 8
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implementation ; Functions:
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int %test1(int %a) {
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entry:
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%tmp.1 = and int %a, 268431360 ; <int> [#uses=1]
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ret int %tmp.1
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}
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int %test2(int %a) {
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entry:
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%tmp.1 = and int %a, -268435441 ; <int> [#uses=1]
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ret int %tmp.1
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}
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int %test3(int %a) {
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entry:
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%tmp.2 = shr int %a, ubyte 8 ; <int> [#uses=1]
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%tmp.3 = and int %tmp.2, 255 ; <int> [#uses=1]
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ret int %tmp.3
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}
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uint %test4(uint %a) {
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entry:
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%tmp.3 = shr uint %a, ubyte 8 ; <uint> [#uses=1]
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%tmp.4 = and uint %tmp.3, 255 ; <uint> [#uses=1]
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ret uint %tmp.4
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}
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int %test5(int %a) {
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entry:
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%tmp.2 = shl int %a, ubyte 8 ; <int> [#uses=1]
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%tmp.3 = and int %tmp.2, -8388608 ; <int> [#uses=1]
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ret int %tmp.3
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}
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int %test6(int %a) {
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entry:
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%tmp.1 = and int %a, 65280 ; <int> [#uses=1]
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%tmp.2 = shr int %tmp.1, ubyte 8 ; <uint> [#uses=1]
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ret int %tmp.2
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}
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uint %test7(uint %a) {
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entry:
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%tmp.1 = and uint %a, 65280 ; <uint> [#uses=1]
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%tmp.2 = shr uint %tmp.1, ubyte 8 ; <uint> [#uses=1]
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ret uint %tmp.2
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}
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int %test8(int %a) {
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entry:
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%tmp.1 = and int %a, 16711680 ; <int> [#uses=1]
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%tmp.2 = shl int %tmp.1, ubyte 8 ; <int> [#uses=1]
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ret int %tmp.2
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}
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