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12 Commits

Author SHA1 Message Date
Stanislav Mekhanoshin
30b3aab329 Copy syncscope when expanding atomicrmw into cmpxchg loop 
Fixes: SWDEV-280070

Differential Revision: https://reviews.llvm.org/D99902
 2021-04-05 17:29:38 -07:00
Konstantin Zhuravlyov
6054a456da AMDGPU: Add support for amdgpu-unsafe-fp-atomics attribute 
If amdgpu-unsafe-fp-atomics is specified, allow {flat|global}_atomic_add_f32 even if atomic modes don't match.

Differential Revision: https://reviews.llvm.org/D95391
 2021-02-04 08:09:34 -05:00
Alex Richardson
5bc438efcf [AtomicExpand] Avoid creating an unnamed libcall 
I recently modified this pass to better support CHERI-RISC-V and while
doing so I noticed that this pass was calling M->getOrInsertFunction()
with the result of TLI->getLibcallName(RTLibType). However, AMDGPU fills
the libcalls array with nullptr, so this creates an anonymous function
instead. This patch changes expandAtomicOpToLibcall to return false in
case the libcall does not exist and changes the assert() in the callees to
a report_fatal_error() instead.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D88800
 2020-11-02 17:52:37 +00:00
Matt Arsenault
af0207f2ba AMDGPU: Check global FP atomics match default FP mode 
We would always select global FP atomics from atomicrmw fadd, although
they have a hardcoded FP mode.
 2020-09-23 09:07:50 -04:00
Matt Arsenault
32137699f7 AMDGPU: Fix copy-pasted test name error 2019-12-11 19:44:47 +05:30
Matt Arsenault
e16a71382d AMDGPU: Select global atomicrmw fadd 
This only works if there is no use of the return value.
 2019-11-06 16:06:38 -08:00
Matt Arsenault
c5830f5f05 AtomicExpand: Don't crash on non-0 alloca 
This now produces garbage on AMDGPU with a call to an nonexistent,
anonymous libcall but won't assert.

llvm-svn: 363022
 2019-06-11 01:35:07 +00:00
Matt Arsenault
383e72fcfe AMDGPU: Expand < 32-bit atomics 
Also fix AtomicExpand asserting on atomicrmw fadd/fsub.

llvm-svn: 363021
 2019-06-11 01:35:00 +00:00
Eric Christopher
cee313d288 Revert "Temporarily Revert "Add basic loop fusion pass."" 
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
 2019-04-17 04:52:47 +00:00
Eric Christopher
a863435128 Temporarily Revert "Add basic loop fusion pass." 
As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546
 2019-04-17 02:12:23 +00:00
Matt Arsenault
a5840c3c39 Codegen support for atomicrmw fadd/fsub 
llvm-svn: 351851
 2019-01-22 18:36:06 +00:00
Matt Arsenault
ab41193312 AMDGPU: Expand atomicrmw nand in IR 
llvm-svn: 343559
 2018-10-02 03:50:56 +00:00