Jakob Stoklund Olesen
e56482d0fd
Fix a bug in the binemit file test.
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Only emit each instruction once, or the offset computations go all
wrong.
2017-04-06 11:17:46 -07:00
Jakob Stoklund Olesen
3a47b40ff8
Add RISC-V encodings for brz and brnz.
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These branches compare a register to zero. RISC-V implements this with
the %x0 hard-coded zero register.
2017-04-03 15:20:57 -07:00
Jakob Stoklund Olesen
39e102b155
Add conditional branch encodings for RISC-V.
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Not all br_icmp opcodes are present in the ISA. The missing ones can be
reached by commuting operands.
Don't attempt to encode EBB offsets yet. For now just emit an EBB
relocation for the branch instruction.
2017-04-03 15:16:25 -07:00
Jakob Stoklund Olesen
175b269760
Add RISC-V encodings for lui.
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This instruction can materialize constants with the low 12 bits clear.
2017-04-03 12:27:22 -07:00
Jakob Stoklund Olesen
c13c318ec4
Add icmp_imm encodings for RISC-V.
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The ISA has icmp_imm slt/ult with 12-bit signed immediate operands.
2017-04-03 10:59:28 -07:00
Jakob Stoklund Olesen
8187fd7371
Emit Rshamt-type instructions for RISC-V.
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These are the shift-by-immediate instructions.
2017-03-31 15:33:21 -07:00
Jakob Stoklund Olesen
7c9d187b6d
Emit I-type instructions for RISC-V.
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These are the BinaryImm formats.
2017-03-31 15:15:20 -07:00
Jakob Stoklund Olesen
39fc0eb3cf
Add RISC-V encodings for supported icmp variants.
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Only slt and ult variants are in the instruction set. Other condition
codes must be synthesized.
2017-03-31 13:47:07 -07:00
Jakob Stoklund Olesen
a5d4839002
Test binary encodings of some RV32I instructions.
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These are the R-format instructions in RV32I.
2017-03-29 13:16:12 -07:00
Jakob Stoklund Olesen
1d6049b8f8
Allow for unencoded instructions in the binemit tests.
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If an instruction doesn't have an associated encoding, use the standard
TargetIsa hook to encode it.
The test still fails if an instruction can't be encoded. There is no
legalization step.
2017-03-29 09:55:49 -07:00
Jakob Stoklund Olesen
36eb39a1f8
Add a binemit test command.
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This makes it possible to write file tests that verify the binary
encoding of machine code.
2017-03-28 15:56:30 -07:00
