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4 Commits

Author SHA1 Message Date
Fangrui Song
ef437a7d3f [CSKY] Fix some Clang warnings. NFC 
Reviewed By: zixuan-wu

Differential Revision: https://reviews.llvm.org/D122872
 2022-04-06 20:09:32 -07:00
serge-sans-paille
989f1c72e0 Cleanup codegen includes 
This is a (fixed) recommit of https://reviews.llvm.org/D121169

after:  1061034926
before: 1063332844

Discourse thread: https://discourse.llvm.org/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D121681
 2022-03-16 08:43:00 +01:00
Zi Xuan Wu
4ad517e6b0 [CSKY] Add floating operation support including float and double 
CSKY arch has multiple FPU instruction versions such as FPU, FPUv2 and FPUv3 to implement floating operations.
For now, we just only support FPUv2 and FPUv3.

It includes the encoding, asm parsing of instructions and codegen of DAG nodes.
 2022-01-27 15:54:04 +08:00
Zi Xuan Wu
065e0324e5 [CSKY] Add CSKYConstantIslands Pass to lift or duplicate constant pool entry 
Loading constants inline is expensive on CSKY and it's in general better
to place the constant nearby in code space and then it can be loaded with a
simple 16/32 bit load instruction like lrw.

It needs lift or duplicates constant pool entry to make constant nearby so that lrw instruction can reach.
 2022-01-11 16:17:11 +08:00