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10 Commits

Author SHA1 Message Date
Pushpinder Singh 60e07a9568 [AMDGPU][OpenMP] Use llvm-link to link ocml libraries 
This fixes the 'unused linker option: -lm' warning when compiling
program with -c.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D107952
 2021-08-13 13:36:57 +05:30
Pushpinder Singh 9830f902e4 [AMDGPU][OpenMP] Support linking of math libraries 
Math libraries are linked only when -lm is specified. This is because
host system could be missing rocm-device-libs.

Reviewed By: JonChesterfield, yaxunl

Differential Revision: https://reviews.llvm.org/D105981
 2021-07-30 13:53:44 +00:00
Pushpinder Singh 10c779d206 [AMDGPU][OpenMP] Emit textual IR for -emit-llvm -S 
Previously clang would print a binary blob into the bundled file
for amdgcn. With this patch, it will instead print textual IR as
expected.

Reviewed By: JonChesterfield, ronlieb

Differential Revision: https://reviews.llvm.org/D102065

Change-Id: I10c0127ab7357787769fdf9a2edd4b3071e790a1
 2021-05-13 01:34:03 +00:00
Pushpinder Singh eca3d68399 Revert "[AMDGPU][OpenMP] Emit textual IR for -emit-llvm -S" 
This reverts commit 7f78e409d0.
 2021-05-11 10:07:13 -05:00
Nico Weber 08de6e3ada clang: Fix tests after 7f78e409d0 if clang is not called clang-13 
We might release a new version at some point after all.
In fact, use the same pattern the other CHECK lines in this test
use, for consistency.
 2021-05-10 08:49:26 -04:00
Pushpinder Singh 7f78e409d0 [AMDGPU][OpenMP] Emit textual IR for -emit-llvm -S 
Previously clang would print a binary blob into the bundled file
for amdgcn. With this patch, it will instead print textual IR as
expected.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D102065
 2021-05-10 07:54:23 +00:00
Pushpinder Singh 1f5cacfcb8 [AMDGPU][OpenMP] Fix clang driver crash when provided -c 
The offload action is used in four different ways as explained
in Driver.cpp:4495. When -c is present, the final phase will be
assemble (linker when -c is not present). However, this phase
is skipped according to D96769 for amdgcn. So, offload action
arrives into following situation,

 compile (device) ---> offload ---> offload

without -c the chain looks like,
 compile (device) ---> offload ---> linker (device)
				---> offload

The former situation creates an unhandled case which causes
problem. The solution presented in this patch delays the D96769
logic until job creation time. This keeps the offload action
in the 1 of the 4 specified situations.

Reviewed By: JonChesterfield

Differential Revision: https://reviews.llvm.org/D101901
 2021-05-05 14:26:58 +00:00
Pushpinder Singh fc12a64ecc [OpenMP][AMDGPU] Skip backend and assemble phases for amdgcn 
Remove emit-llvm-bc from addClangTargetOptions as it conflicts with -E for save-temps.

AMDGCN does not yet support linking object files so backend and assemble actions are
skipped, leaving LLVM IR as the output format.

Reviewed By: JonChesterfield, ronlieb

Differential Revision: https://reviews.llvm.org/D96769
 2021-03-16 04:58:14 +00:00
Pushpinder Singh 79401b43ce [OpenMP][AMDGPU] Add support for linking libomptarget bitcode 
This patch uses the existing logic of CUDA for searching libomptarget
and extracts it to a common method.

Reviewed By: JonChesterfield, tianshilei1992

Differential Revision: https://reviews.llvm.org/D96248
 2021-02-12 00:42:41 -05:00
Pushpinder Singh fcf03e7280 [OpenMP] Add OpenMP offloading toolchain for AMDGPU 
This patch adds AMDGPUOpenMPToolChain for supporting OpenMP
offloading to AMD GPU's.

Originally authored by Greg Rodgers

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D94961
 2021-02-03 00:42:52 -05:00