Commit Graph

4 Commits

Author SHA1 Message Date
Geoff Berry 98150e3a62 [AArch64] Take advantage of variable shift/rotate amount implicit mod operation.
Summary:
Optimize code generated for variable shifts/rotates by taking advantage
of the implicit and/mod done on the variable shift amount register.

Resolves bug 27582 and bug 37421.

Reviewers: t.p.northover, qcolombet, MatzeB, javed.absar

Subscribers: rengolin, kristof.beyls, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D46844

llvm-svn: 333214
2018-05-24 18:29:42 +00:00
Simon Pilgrim fc4d4b251d [AARCH64] Enable AARCH64 lit tests on windows dev machines
As discussed on PR27654, this patch fixes the triples of a lot of aarch64 tests and enables lit tests on windows

This will hopefully help stop cases where windows developers break the aarch64 target

Differential Revision: https://reviews.llvm.org/D22191

llvm-svn: 275973
2016-07-19 13:35:11 +00:00
Tim Northover f3be9d5c0b AArch64: fix 128-bit shifts
We mustn't introduce a shift of exactly 64-bits for any inputs, since that's an
UNDEF value (and worse, it's not what you want with the natural Arch64
implementation).

The generated code is pretty horrific, but I couldn't come up with an obviously
better alternative (if the amount is constant EXTR could help). Turns out
128-bit shifts are just nasty.

rdar://22491037

llvm-svn: 254475
2015-12-02 00:33:54 +00:00
Tim Northover 3b0846e8f7 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