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5 Commits

Author SHA1 Message Date
Ahmed Bougacha
54c4fb4a3f [AArch64] Also combine vector selects fed by non-i1 SETCCs.
After legalization, scalar SETCC has an i32 result type on AArch64.
The i1 requirement seems too conservative, replace it with an assert.

This also means that we now can run after legalization. That should also
be fine, since the ops legalizer runs again after each combine, and
all types created all have the same sizes as the (legal) inputs.

Exposed by r235917; while there, robustize its tests (bsl also uses the
register it defines).

llvm-svn: 235922
2015-04-27 21:43:12 +00:00
Ahmed Bougacha
5f0f3e8528 [AArch64] Don't assert when combining (v3f32 select (setcc f64)).
When the setcc has f64 operands, we can't build a vector setcc mask
to feed a vselect, because f64 doesn't divide v3f32 evenly.
Just bail out when that happens.

llvm-svn: 235917
2015-04-27 21:01:20 +00:00
Ahmed Bougacha
17e4b2bbd7 [AArch64] Don't combine "select (setcc i1 LHS, RHS), vL, vR".
r208210 introduced an optimization that improves the vector select
codegen by doing the setcc on vectors directly.
This is a problem they the setcc operands are i1s, because the
optimization would create vectors of i1, which aren't legal.

Part of PR21549.

Differential Revision: http://reviews.llvm.org/D6308

llvm-svn: 223075
2014-12-01 20:59:00 +00:00
Chandler Carruth
fc0fe5064b [codegen,aarch64] Add a target hook to the code generator to control
vector type legalization strategies in a more fine grained manner, and
change the legalization of several v1iN types and v1f32 to be widening
rather than scalarization on AArch64.

This fixes an assertion failure caused by scalarizing nodes like "v1i32
trunc v1i64". As v1i64 is legal it will fail to scalarize v1i32.

This also provides a foundation for other targets to have more granular
control over how vector types are legalized.

Patch by Hao Liu, reviewed by Tim Northover. I'm committing it to allow
some work to start taking place on top of this patch as it adds some
really important hooks to the backend that I'd like to immediately start
using. =]

http://reviews.llvm.org/D4322

llvm-svn: 212242
2014-07-03 00:23:43 +00:00
Tim Northover
ca0f4dc4f0 AArch64/ARM64: move ARM64 into AArch64's place
This commit starts with a "git mv ARM64 AArch64" and continues out
from there, renaming the C++ classes, intrinsics, and other
target-local objects for consistency.

"ARM64" test directories are also moved, and tests that began their
life in ARM64 use an arm64 triple, those from AArch64 use an aarch64
triple. Both should be equivalent though.

This finishes the AArch64 merge, and everyone should feel free to
continue committing as normal now.

llvm-svn: 209577
2014-05-24 12:50:23 +00:00