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* [mips] Add cache and pref instructionsDaniel Sanders2014-06-131-0/+2
| | | | | | | | | | | | | | | | | | | Summary: cache and pref were added in MIPS-III, and MIPS32 but were re-encoded in MIPS32r6/MIPS64r6 to use a 9-bit offset rather than the 16-bit offset available to earlier cores. Resolved the decoding conflict between pref and lwc3. Depends on D4115 Reviewers: zoran.jovanovic, jkolek, vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D4116 llvm-svn: 210900
* [mips][mips64r6] b(ge|lt)zal are not available on MIPS32r6/MIPS64r6 and bal ↵Daniel Sanders2014-06-131-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | is a normal instruction Summary: b(ge|lt)zal have been removed in MIPS32r6/MIPS64r6. However, bal (an alias for 'bgezal $zero, $offset') still remains with the same encoding it had prior to MIPS32r6/MIPS64r6. Updated the MipsNaCLELFStreamer, and MipsLongBranch to correctly handle the MIPS32r6/MIPS64r6 BAL instruction in addition to the existing BAL_BR pseudo. No changes were required to the CodeGen test that looks for BAL (test/CodeGen/Mips/longbranch.ll) since the new instruction has the same syntax. Depends on D4113 Reviewers: jkolek, zoran.jovanovic, vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D4114 llvm-svn: 210898
* [mips][mips64r6] bc1[tf] are not available on MIPS32r6/MIPS64r6Daniel Sanders2014-06-121-0/+6
| | | | | | | | | | | | | | | | | | | | Summary: Also tightened up the acceptable condition operand for these instructions on MIPS-I to MIPS-III. Support for $fcc[1-7] was added in MIPS-IV. Prior to that only $fcc0 is acceptable. We currently don't optimize (BEQZ (NOT $a), $target) and similar. It's probably best to do this in InstCombine. Depends on D4111 Reviewers: jkolek, zoran.jovanovic, vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D4112 llvm-svn: 210787
* [mips] Marked up instructions added in MIPS32r2 and tested that IAS for ↵Daniel Sanders2014-05-132-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | -mcpu=mips(2|32) does not accept them Summary: This required a new instruction group representing the 32-bit subset of MIPS-3 that was available in MIPS32R2. To limit the number of tests required, only one 32-bit and one 64-bit ISA prior to MIPS32/MIPS64 are tested. rdhwr has been deliberately left without an ISA annotation for now. This is because the assembler and CodeGen disagree on when the instruction is available. Strictly speaking, it is only available in MIPS32r2 and MIPS64r2. However, it is emulated by a kernel trap on earlier ISA's and is necessary for TLS so CodeGen should emit it on older ISA's too. Depends on D3696 Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3697 llvm-svn: 208690
* [mips] Marked up instructions added in MIPS-V and tested that IAS for ↵Daniel Sanders2014-05-122-3/+3
| | | | | | | | | | | | | | | | | | | | | | -mcpu=mips[1234] does not accept them Summary: This required a new instruction group representing the 32-bit subset of MIPS-V that was available in MIPS32R2 Most of these instructions are correctly rejected but with the wrong error message. These have been placed in a separate test for now. It happens because many of the MIPS V instructions have not been implemented. Depends on D3694 Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3695 llvm-svn: 208546
* [mips] Fold FeatureBitCount into FeatureMips32 and FeatureMips64Daniel Sanders2014-05-121-0/+9
| | | | | | | | | | | | | | | | | | | | | Summary: DCL[ZO] are now correctly marked as being MIPS64 instructions. This has no effect on the CodeGen tests since expansion of i64 prevented their use anyway. The check for MIPS16 to prevent the use of CLZ no longer prevents DCLZ as well. This is not a functional change since DCLZ is still prohibited by being a MIPS64 instruction (MIPS16 is only compatible with MIPS32). No functional change Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3694 llvm-svn: 208544
* [mips] Added missing dsra -> dsrav and sra -> srav aliases.Daniel Sanders2014-05-091-0/+1
| | | | | | | | | | | | Summary: dsll, dsrl, sll, and srl already exist. Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3673 llvm-svn: 208397
* [mips] Correct tests that are meant to test valid assembly. They were ↵Daniel Sanders2014-05-082-173/+173
| | | | | | | | | | | | | | | | | | | | | | | | | | | actually rejected by GAS. Summary: I've noticed a bug in my test generator script that caused 64-bit objects to be disassembled as if it were using the O32 ABI, giving the wrong register names. As a result, it generated assembly files that are rejected by GAS when assembling for the correct ABI. This was caused by the generator setting the ELF e_flags incorrectly before disassembling the object. This patch corrects the invalid tests that have already been committed by replacing the ABI-dependent register names with numeric registers. In addition to fixing the tests this allows the 32-bit and 64-bit ISA tests to be easily diffed to produce the invalid-*.s tests which test that instructions defined in later ISA's are not accepted. Depends on D3648 Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3649 llvm-svn: 208327
* [mips] Implement l[wd]c3, and s[wd]c3.Daniel Sanders2014-05-081-2/+0
| | | | | | | | | | | | | | | | | | | | | Summary: These instructions were added in MIPS-I, and MIPS-II but were removed in MIPS-III. Interestingly, GAS continues to accept them when assembling for MIPS-III. For the moment, these instructions will follow GAS and accept them for MIPS-III and newer but this will be tightened up when the invalid-*.s tests are added. Depends on D3647 Reviewers: vmedic Reviewed By: vmedic Differential Revision: http://reviews.llvm.org/D3648 llvm-svn: 208311
* [mips] Implement tlbp, tlbr, tlbwi, and tlbwrDaniel Sanders2014-05-082-4/+4
| | | | | | | | | | Reviewers: vmedic, dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3571 llvm-svn: 208301
* [mips] Removed two-operand alias for sllv, sr[al]v, rotrv, dsllv, dsr[al]v, ↵Daniel Sanders2014-05-012-4/+0
| | | | | | | | | | and drotrv GAS doesn't actually accept these particular cases. The mnemonic without the trailing 'v' still supports two-operand aliases. llvm-svn: 207740
* [mips] Add instruction alias (negu).Matheus Almeida2014-04-301-0/+2
| | | | | | | | | | | | Summary: negu $reg is equivalent to negu $reg, $reg. Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3510 llvm-svn: 207673
* [mips] Add instruction alias (sltu).Matheus Almeida2014-04-301-0/+1
| | | | | | | | | | | | | | Summary: The pattern sltu $r1, $r2, $imm is found in handwritten assembly which is just a shorthand version of sltui $r1, $r2, $imm. Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3508 llvm-svn: 207671
* [mips] Add instruction alias (sll and srl).Matheus Almeida2014-04-301-0/+2
| | | | | | | | | | | | | | Summary: The pattern sll/srl $rd, $rt, $rs is found in handwritten assembly which is just a shorthand version of sllv/srlv $rd, $rt, $rs. Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3483 llvm-svn: 207657
* [mips] Update tests with encoding information for slt, slti, sltiu and sltu.Matheus Almeida2014-04-301-4/+4
| | | | | | | | | | | | | | Summary: Also renamed non-portable register names (e.g. $t2) so that we don't end up with a different encoding for what appears to be an equivalent instruction. Reviewers: dsanders Reviewed By: dsanders Differential Revision: http://reviews.llvm.org/D3505 llvm-svn: 207655
* [mips] Use TwoOperandAliasConstraint for shift instructions.Matheus Almeida2014-04-162-4/+17
| | | | | | | | | | This enables TableGen to generate an additional two operand matcher for our shift_rotate_imm and shift_rotate_reg class of instructions. The tests were also updated so that they include now encoding information for all affected instructions. llvm-svn: 206398
* [mips] Add negative tests confirm that supported ISA's don't allow ↵Daniel Sanders2014-04-032-1/+35
| | | | | | | | | | | | | | | | | | | instructions added in later ISA's Summary: test/MC/Mips/<isa1>/invalid-<isa2>.s Test that <isa1> does not support <isa2>'s instructions. test/MC/Mips/<isa1>/invalid-<isa2>-xfail.s Things that should be invalid but currently aren't. Will XPASS if any become invalid. Reviewers: matheusalmeida Reviewed By: matheusalmeida Differential Revision: http://llvm-reviews.chandlerc.com/D3262 llvm-svn: 205538
* [mips] Implement ehb, ssnop, and pause in assemblerDaniel Sanders2014-04-033-2/+10
| | | | | | | | | | | | Summary: Add negative tests for pause Reviewers: matheusalmeida Reviewed By: matheusalmeida Differential Revision: http://llvm-reviews.chandlerc.com/D3246 llvm-svn: 205537
* [mips] Added a full set of instruction test cases for all ISA's (but not ASE's).Daniel Sanders2014-03-312-0/+175
Summary: Where those ISA's are not currently supported, the test is run with the smallest superset of that ISA. Some instructions are valid but don't pass yet. These have been placed in the valid-xfail.s's which will XPASS if _any_ instruction starts working. The valid.s's do not verify the encoding yet. There are also no tests checking that instructions from neighbouring ISA's are not accepted. Reviewers: matheusalmeida Reviewed By: matheusalmeida Differential Revision: http://llvm-reviews.chandlerc.com/D3214 llvm-svn: 205180
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