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Summary: The forwards compatibility strategy employed by MIPS is to consider registers to be infinitely sign-extended. Then on ISA's with a wider register, the result of existing instructions are sign-extended to register width and zero-extended counterparts are added. copy_u.w on MSA32 and copy_u.w on MSA64 violate this strategy and we have therefore corrected the MSA specs to fix this. We still keep track of sign/zero-extension during legalization but we now match copy_s.[wd] where required. No change required to clang since __builtin_msa_copy_u_[wd] will map to copy_s.[wd] where appropriate for the target. Reviewers: vkalintiris Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13472 llvm-svn: 250887 |
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AArch64 | ||
AMDGPU | ||
ARM | ||
BPF | ||
CPP | ||
Generic | ||
Hexagon | ||
Inputs | ||
Mips | ||
MIR | ||
MSP430 | ||
NVPTX | ||
PowerPC | ||
SPARC | ||
SystemZ | ||
Thumb | ||
Thumb2 | ||
WebAssembly | ||
WinEH | ||
X86 | ||
XCore |