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author | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
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committer | Dimitry Andric <dim@FreeBSD.org> | 2019-10-23 17:51:42 +0000 |
commit | 1d5ae1026e831016fc29fd927877c86af904481f (patch) | |
tree | 2cdfd12620fcfa5d9e4a0389f85368e8e36f63f9 /lib/Target/AMDGPU/AMDGPURegisterInfo.cpp | |
parent | e6d1592492a3a379186bfb02bd0f4eda0669c0d5 (diff) | |
download | src-test2-1d5ae1026e831016fc29fd927877c86af904481f.tar.gz src-test2-1d5ae1026e831016fc29fd927877c86af904481f.zip |
Vendor import of stripped llvm trunk r375505, the last commit before thevendor/llvm/llvm-trunk-r375505vendor/llvm
upstream Subversion repository was made read-only, and the LLVM project
migrated to GitHub:
https://llvm.org/svn/llvm-project/llvm/trunk@375505
Notes
Notes:
svn path=/vendor/llvm/dist/; revision=353940
svn path=/vendor/llvm/llvm-r375505/; revision=353941; tag=vendor/llvm/llvm-trunk-r375505
Diffstat (limited to 'lib/Target/AMDGPU/AMDGPURegisterInfo.cpp')
-rw-r--r-- | lib/Target/AMDGPU/AMDGPURegisterInfo.cpp | 66 |
1 files changed, 53 insertions, 13 deletions
diff --git a/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp b/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp index 7cffdf1a4dcf..9806e6b0714f 100644 --- a/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp +++ b/lib/Target/AMDGPU/AMDGPURegisterInfo.cpp @@ -26,19 +26,59 @@ AMDGPURegisterInfo::AMDGPURegisterInfo() : AMDGPUGenRegisterInfo(0) {} // they are not supported at this time. //===----------------------------------------------------------------------===// -unsigned AMDGPURegisterInfo::getSubRegFromChannel(unsigned Channel) { - static const unsigned SubRegs[] = { - AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2, AMDGPU::sub3, AMDGPU::sub4, - AMDGPU::sub5, AMDGPU::sub6, AMDGPU::sub7, AMDGPU::sub8, AMDGPU::sub9, - AMDGPU::sub10, AMDGPU::sub11, AMDGPU::sub12, AMDGPU::sub13, AMDGPU::sub14, - AMDGPU::sub15, AMDGPU::sub16, AMDGPU::sub17, AMDGPU::sub18, AMDGPU::sub19, - AMDGPU::sub20, AMDGPU::sub21, AMDGPU::sub22, AMDGPU::sub23, AMDGPU::sub24, - AMDGPU::sub25, AMDGPU::sub26, AMDGPU::sub27, AMDGPU::sub28, AMDGPU::sub29, - AMDGPU::sub30, AMDGPU::sub31 - }; - - assert(Channel < array_lengthof(SubRegs)); - return SubRegs[Channel]; +// Table of NumRegs sized pieces at every 32-bit offset. +static const uint16_t SubRegFromChannelTable[][32] = { + { AMDGPU::sub0, AMDGPU::sub1, AMDGPU::sub2, AMDGPU::sub3, + AMDGPU::sub4, AMDGPU::sub5, AMDGPU::sub6, AMDGPU::sub7, + AMDGPU::sub8, AMDGPU::sub9, AMDGPU::sub10, AMDGPU::sub11, + AMDGPU::sub12, AMDGPU::sub13, AMDGPU::sub14, AMDGPU::sub15, + AMDGPU::sub16, AMDGPU::sub17, AMDGPU::sub18, AMDGPU::sub19, + AMDGPU::sub20, AMDGPU::sub21, AMDGPU::sub22, AMDGPU::sub23, + AMDGPU::sub24, AMDGPU::sub25, AMDGPU::sub26, AMDGPU::sub27, + AMDGPU::sub28, AMDGPU::sub29, AMDGPU::sub30, AMDGPU::sub31 + }, + { + AMDGPU::sub0_sub1, AMDGPU::sub1_sub2, AMDGPU::sub2_sub3, AMDGPU::sub3_sub4, + AMDGPU::sub4_sub5, AMDGPU::sub5_sub6, AMDGPU::sub6_sub7, AMDGPU::sub7_sub8, + AMDGPU::sub8_sub9, AMDGPU::sub9_sub10, AMDGPU::sub10_sub11, AMDGPU::sub11_sub12, + AMDGPU::sub12_sub13, AMDGPU::sub13_sub14, AMDGPU::sub14_sub15, AMDGPU::sub15_sub16, + AMDGPU::sub16_sub17, AMDGPU::sub17_sub18, AMDGPU::sub18_sub19, AMDGPU::sub19_sub20, + AMDGPU::sub20_sub21, AMDGPU::sub21_sub22, AMDGPU::sub22_sub23, AMDGPU::sub23_sub24, + AMDGPU::sub24_sub25, AMDGPU::sub25_sub26, AMDGPU::sub26_sub27, AMDGPU::sub27_sub28, + AMDGPU::sub28_sub29, AMDGPU::sub29_sub30, AMDGPU::sub30_sub31, AMDGPU::NoSubRegister + }, + { + AMDGPU::sub0_sub1_sub2, AMDGPU::sub1_sub2_sub3, AMDGPU::sub2_sub3_sub4, AMDGPU::sub3_sub4_sub5, + AMDGPU::sub4_sub5_sub6, AMDGPU::sub5_sub6_sub7, AMDGPU::sub6_sub7_sub8, AMDGPU::sub7_sub8_sub9, + AMDGPU::sub8_sub9_sub10, AMDGPU::sub9_sub10_sub11, AMDGPU::sub10_sub11_sub12, AMDGPU::sub11_sub12_sub13, + AMDGPU::sub12_sub13_sub14, AMDGPU::sub13_sub14_sub15, AMDGPU::sub14_sub15_sub16, AMDGPU::sub15_sub16_sub17, + AMDGPU::sub16_sub17_sub18, AMDGPU::sub17_sub18_sub19, AMDGPU::sub18_sub19_sub20, AMDGPU::sub19_sub20_sub21, + AMDGPU::sub20_sub21_sub22, AMDGPU::sub21_sub22_sub23, AMDGPU::sub22_sub23_sub24, AMDGPU::sub23_sub24_sub25, + AMDGPU::sub24_sub25_sub26, AMDGPU::sub25_sub26_sub27, AMDGPU::sub26_sub27_sub28, AMDGPU::sub27_sub28_sub29, + AMDGPU::sub28_sub29_sub30, AMDGPU::sub29_sub30_sub31, AMDGPU::NoSubRegister, AMDGPU::NoSubRegister + }, + { + AMDGPU::sub0_sub1_sub2_sub3, AMDGPU::sub1_sub2_sub3_sub4, AMDGPU::sub2_sub3_sub4_sub5, AMDGPU::sub3_sub4_sub5_sub6, + AMDGPU::sub4_sub5_sub6_sub7, AMDGPU::sub5_sub6_sub7_sub8, AMDGPU::sub6_sub7_sub8_sub9, AMDGPU::sub7_sub8_sub9_sub10, + AMDGPU::sub8_sub9_sub10_sub11, AMDGPU::sub9_sub10_sub11_sub12, AMDGPU::sub10_sub11_sub12_sub13, AMDGPU::sub11_sub12_sub13_sub14, + AMDGPU::sub12_sub13_sub14_sub15, AMDGPU::sub13_sub14_sub15_sub16, AMDGPU::sub14_sub15_sub16_sub17, AMDGPU::sub15_sub16_sub17_sub18, + AMDGPU::sub16_sub17_sub18_sub19, AMDGPU::sub17_sub18_sub19_sub20, AMDGPU::sub18_sub19_sub20_sub21, AMDGPU::sub19_sub20_sub21_sub22, + AMDGPU::sub20_sub21_sub22_sub23, AMDGPU::sub21_sub22_sub23_sub24, AMDGPU::sub22_sub23_sub24_sub25, AMDGPU::sub23_sub24_sub25_sub26, + AMDGPU::sub24_sub25_sub26_sub27, AMDGPU::sub25_sub26_sub27_sub28, AMDGPU::sub26_sub27_sub28_sub29, AMDGPU::sub27_sub28_sub29_sub30, + AMDGPU::sub28_sub29_sub30_sub31, AMDGPU::NoSubRegister, AMDGPU::NoSubRegister, AMDGPU::NoSubRegister + } +}; + +// FIXME: TableGen should generate something to make this manageable for all +// register classes. At a minimum we could use the opposite of +// composeSubRegIndices and go up from the base 32-bit subreg. +unsigned AMDGPURegisterInfo::getSubRegFromChannel(unsigned Channel, unsigned NumRegs) { + const unsigned NumRegIndex = NumRegs - 1; + + assert(NumRegIndex < array_lengthof(SubRegFromChannelTable) && + "Not implemented"); + assert(Channel < array_lengthof(SubRegFromChannelTable[0])); + return SubRegFromChannelTable[NumRegIndex][Channel]; } void AMDGPURegisterInfo::reserveRegisterTuples(BitVector &Reserved, unsigned Reg) const { |