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60 Commits

Author SHA1 Message Date
Tim Northover 868332d6bf GlobalISel: legalize narrow G_SELECTS on AArch64. 
Otherwise there aren't any patterns to select them.

llvm-svn: 294261
 2017-02-06 23:41:27 +00:00
Tim Northover 0e6afbdd77 GlobalISel: legalize G_INSERT instructions 
We don't handle all cases yet (see arm64-fallback.ll for an example), but this
is enough to cover most common C++ code so it's a good place to start.

llvm-svn: 294247
 2017-02-06 21:56:47 +00:00
Ahmed Bougacha b6137063eb [AArch64][GlobalISel] Legalize narrow scalar fp->int conversions. 
Since we're now avoiding operations using narrow scalar integer types,
we have to legalize the integer side of the FP conversions.

This requires teaching the legalizer how to do that.

llvm-svn: 292828
 2017-01-23 21:10:14 +00:00
Ahmed Bougacha d294823930 [AArch64][GlobalISel] Widen scalar int->fp conversions. 
It's incorrect to ignore the higher bits of the integer source.
Teach the legalizer how to widen it.

llvm-svn: 292563
 2017-01-20 01:37:24 +00:00
Justin Bogner e094cc4372 GlobalISel: Add a note about how we're being a bit loose with memory operands 
The logic in r292461 is conservatively correct, but we should revisit
this later. Add a TODO so we don't forget.

llvm-svn: 292553
 2017-01-20 00:30:17 +00:00
Justin Bogner ddb80aee7e GlobalISel: Implement widening for shifts 
llvm-svn: 292476
 2017-01-19 07:51:17 +00:00
Justin Bogner d09c3ce6c0 GlobalISel: Implement narrowing for G_LOAD 
llvm-svn: 292461
 2017-01-19 01:05:48 +00:00
Justin Bogner fde0104649 GlobalISel: Implement narrowing for G_STORE 
Legalize stores of types that are too wide by breaking them up into
sequences of smaller stores.

llvm-svn: 292412
 2017-01-18 17:29:54 +00:00
Tim Northover 9267ac5d47 GlobalISel: make G_CONSTANT take a ConstantInt rather than int64_t. 
This makes it more similar to the floating-point constant, and also allows for
larger constants to be translated later. There's no real functional change in
this patch though, just syntax updates.

llvm-svn: 288712
 2016-12-05 21:47:07 +00:00
Tim Northover 69fa84a6e9 GlobalISel: rename legalizer components to match others. 
The previous names were both misleading (the MachineLegalizer actually
contained the info tables) and inconsistent with the selector & translator (in
having a "Machine") prefix. This should make everything sensible again.

The only functional change is the name of a couple of command-line options.

llvm-svn: 284287
 2016-10-14 22:18:18 +00:00