Summary:
This does not include support for the immediate variants of these pseudo-instructions.
Fixes llvm.org/PR20968.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: seanbruno, emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D8537
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239905 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Call MCSymbolRefExpr::create() with a MCSymbol* argument, not with a StringRef
of the Symbol's name, in order to avoid creating invalid temporary symbols for
relative labels (e.g. {$,.L}tmp00, {$,.L}tmp10 etc.).
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D10498
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239901 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Previously, MCSymbolRefExpr::create() was called with a StringRef of the symbol
name, which it would then search for in the Symbols StringMap (from MCContext).
However, relative labels (which are temporary symbols) are apparently not stored
in the Symbols StringMap, so we end up creating a new {$,.L}tmp symbol
({$,.L}tmp00, {$,.L}tmp10 etc.) each time we create an MCSymbolRefExpr by
passing in the symbol name as a StringRef.
Fortunately, there is a version of MCSymbolRefExpr::create() which takes an
MCSymbol* and we already have an MCSymbol* at that point, so we can just pass
that in instead of the StringRef.
I also removed the local StringRef calls to MCSymbolRefExpr::create() from
expandMemInst(), as those cases can be handled by evaluateRelocExpr() anyway.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9938
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239897 91177308-0d34-0410-b5e6-96231b3b80d8
Specified the llvm namespace for the 2 calls to make_unique() which caused
compilation errors in Visual Studio 2013.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239405 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
For some branches, GAS accepts an immediate instead of the 2nd register operand.
We only implement this for BNE and BEQ for now. Other branch instructions can be added later, if needed.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: seanbruno, emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D9666
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239396 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Only restoring AvailableFeatures is not enough and will lead to buggy behaviour.
For example, if we have a feature enabled and we ".set pop", the next time we try
to ".set" that feature nothing will happen because the "!(STI.getFeatureBits()[Feature])"
check will be false, because we didn't restore STI.FeatureBits.
In order to fix this, we need to make MipsAssemblerOptions remember the STI.FeatureBits
instead of the AvailableFeatures and then regenerate AvailableFeatures each time we ".set pop".
This is because, AFAIK, there is no way to convert from AvailableFeatures back to STI.FeatureBits,
but the reverse is possible by using ComputeAvailableFeatures(STI.FeatureBits).
I also moved the updating of AssemblerOptions inside the "if" statement in
setFeatureBits() and clearFeatureBits(), as there is no reason to update if
nothing changes.
Reviewers: dsanders, mkuper
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9156
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239144 91177308-0d34-0410-b5e6-96231b3b80d8
Previously, subtarget features were a bitfield with the underlying type being uint64_t.
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.
No functional change.
The first several times this was committed (e.g. r229831, r233055), it caused several buildbot failures.
Apparently the reason for most failures was both clang and gcc's inability to deal with large numbers (> 10K) of bitset constructor calls in tablegen-generated initializers of instruction info tables.
This should now be fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238192 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
To maintain compatibility with GAS, we need to stop treating negative 32-bit immediates as 64-bit values when expanding LI/DLI.
This currently happens because of sign extension.
To do this we need to choose the 32-bit value expansion for values which use their upper 33 bits only for sign extension (i.e. no 0's, only 1's).
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8662
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237428 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
If we only pass the necessary operands, we don't have to determine the position of the symbol operand when entering expandLoadAddressSym().
This simplifies the expandLoadAddressSym() code.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9291
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237355 91177308-0d34-0410-b5e6-96231b3b80d8
Some compilers warn about using the ternary operator with an unsigned variable
and enum.
I haven't seen this trigger in the llvm.org buildbots yet, but it probably will
at some point.
Reported by Daniel Sanders.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237262 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: A side-effect of this is that LA gains proper handling of unsigned and positive signed 16-bit immediates and more accurate error messages.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9290
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237255 91177308-0d34-0410-b5e6-96231b3b80d8
The buildbots are still not satisfied.
MIPS and ARM are failing (even though at least MIPS was expected to pass).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237245 91177308-0d34-0410-b5e6-96231b3b80d8
Previously, subtarget features were a bitfield with the underlying type being uint64_t.
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.
No functional change.
The first two times this was committed (r229831, r233055), it caused several buildbot failures.
At least some of the ARM and MIPS ones were due to gcc/binutils issues, and should now be fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237234 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: This will enable the IAS to reject floating point instructions if soft-float is enabled.
Reviewers: dsanders, echristo
Reviewed By: dsanders
Subscribers: jfb, llvm-commits, mpf
Differential Revision: http://reviews.llvm.org/D9053
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236713 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
LI should never accept immediates larger than 32 bits.
The additional Is32BitImm boolean also paves the way for unifying the functionality that LA and LI have in common.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D9289
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236313 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Generate one DSLL32 of 0 instead of two consecutive DSLL of 16.
In order to do this I had to change createLShiftOri's template argument from a bool to an unsigned.
This also gave me the opportunity to rewrite the mips64-expansions.s test, as it was testing the same cases multiple times and skipping over other cases.
It was also somewhat unreadable, as the CHECK lines were grouped in a huge block of text at the beginning of the file.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8974
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236311 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Do the assemble-time shifts from createLShiftOri at the source, which groups all the shifting together, closer to the main logic path, and
store the results in concisely-named variables to improve code clarity.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8973
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236096 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Changed the warning message to show the current value of $at, similar to what clang does for typedef's, and renamed warnIfAssemblerTemporary to a more descriptive name.
I also changed the type of variables which store registers from int to unsigned, updated the relevant test and tried to make the related comments clearer.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8479
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235881 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This directive is exactly the same as .asciz, except it's only used by MIPS.
It is used to store null terminated strings in object files.
Reviewers: rafael, dsanders, echristo
Reviewed By: dsanders, echristo
Subscribers: echristo, llvm-commits
Differential Revision: http://reviews.llvm.org/D7530
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235382 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This assembler directive marks the current label as an instruction label in microMIPS and MIPS16.
This initial implementation works only for microMIPS.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8006
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235084 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Refactor MipsAsmParser::getATReg to return an internal register number instead of a register index.
Also change all the int's to unsigned, seeing as the current AT register index is stored as an unsigned in MipsAssemblerOptions.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8478
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234996 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Even though there is no 2nd register operand in the "lw/sw $8, symbol" case, we still try to find one,
and we end up with $0, which makes us generate an unnecessary "addu $8, $8, $0" (a.k.a. "move $8, $8").
We can avoid this by checking if the 2nd register operand is different from $0, before generating the addu.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8055
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234406 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is not possible when using the IAS for MIPS, but it is possible when using the IAS for other architectures and when using GAS for MIPS.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8578
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234316 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: This groups all of the MipsAssemblerOptions functionality together, making it more reader-friendly.
Reviewers: dsanders
Reviewed By: dsanders
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8445
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233271 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r233055.
It still causes buildbot failures (gcc running out of memory on several platforms, and a self-host failure on arm), although less than the previous time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233068 91177308-0d34-0410-b5e6-96231b3b80d8
Previously, subtarget features were a bitfield with the underlying type being uint64_t.
Since several targets (X86 and ARM, in particular) have hit or were very close to hitting this bound, switching the features to use a bitset.
No functional change.
The first time this was committed (r229831), it caused several buildbot failures.
At least some of the ARM ones were due to gcc/binutils issues, and should now be fixed.
Differential Revision: http://reviews.llvm.org/D8542
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233055 91177308-0d34-0410-b5e6-96231b3b80d8
