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Summary:
Highlights:
- Registers are resolved much later (by the render method).
Prior to that point, GPR32's/GPR64's are GPR's regardless of register
size. Similarly FGR32's/FGR64's/AFGR64's are FGR's regardless of register
size or FR mode. Numeric registers can be anything.
- All registers are parsed the same way everywhere (even when handling
symbol aliasing)
- One consequence is that all registers can be specified numerically
almost anywhere (e.g. $fccX, $wX). The exception is symbol aliasing
but that can be easily resolved.
- Removes the need for the hasConsumedDollar hack
- Parenthesis and Bracket suffixes are handled generically
- Micromips instructions are parsed directly instead of going through the
standard encodings first.
- rdhwr accepts all 32 registers, and the following instructions that previously
xfailed now work:
ddiv, ddivu, div, divu, cvt.l.[ds], se[bh], wsbh, floor.w.[ds], c.ngl.d,
c.sf.s, dsbh, dshd, madd.s, msub.s, nmadd.s, nmsub.s, swxc1
- Diagnostics involving registers point at the correct character (the $)
- There's only one kind of immediate in MipsOperand. LSA immediates are handled
by the predicate and renderer.
Lowlights:
- Hardcoded '$zero' in the div patterns is handled with a hack.
MipsOperand::isReg() will return true for a k_RegisterIndex token
with Index == 0 and getReg() will return ZERO for this case. Note that it
doesn't return ZERO_64 on isGP64() targets.
- I haven't cleaned up all of the now-unused functions.
Some more of the generic parser could be removed too (integers and relocs
for example).
- insve.df needed a custom decoder to handle the implicit fourth operand that
was needed to make it parse correctly. The difficulty was that the matcher
expected a Token<'0'> but gets an Imm<0>. Adding an implicit zero solved this.
Reviewers: matheusalmeida, vmedic
Reviewed By: matheusalmeida
Differential Revision: http://llvm-reviews.chandlerc.com/D3222
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205292 91177308-0d34-0410-b5e6-96231b3b80d8
14 lines
622 B
ArmAsm
14 lines
622 B
ArmAsm
# RUN: llvm-mc %s -triple=mips-unknown-unknown -show-encoding -mcpu=mips32 | \
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# RUN: FileCheck %s
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# RUN: llvm-mc %s -triple=mips64-unknown-unknown -show-encoding -mcpu=mips64 | \
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# RUN: FileCheck %s
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# Check that we can accept register names in CFI directives and that they are
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# canonicalised to their DWARF register numbers.
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.cfi_startproc # CHECK: .cfi_startproc
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.cfi_register $6, $5 # CHECK: .cfi_register 6, 5
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.cfi_def_cfa $fp, 8 # CHECK: .cfi_def_cfa 30, 8
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.cfi_def_cfa $2, 16 # CHECK: .cfi_def_cfa 2, 16
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.cfi_endproc # CHECK: .cfi_endproc
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