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package/llvm: enable AMDGPU

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The AMDGPU backend provides ISA code generation for AMD GPU's,
starting with the R600 family up until the current GCN families.

It should not be confused with the AMDGPU Linux kernel DRM driver.

For more info: https://llvm.org/docs/AMDGPUUsage.html

Signed-off-by: Valentin Korenblit <valentin.korenblit@smile.fr>
Tested-by: Jérôme Oufella <jerome.oufella@savoirfairelinux.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Valentin Korenblit 2018-04-04 18:31:19 +02:00 committed by Thomas Petazzoni
parent a098636a6b
commit 29f04d7934
2 changed files with 19 additions and 0 deletions
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10
package/llvm/Config.in
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@ -24,6 +24,16 @@ config BR2_PACKAGE_LLVM
http://llvm.org
if BR2_PACKAGE_LLVM
config BR2_PACKAGE_LLVM_AMDGPU
bool "AMDGPU backend"
help
Build AMDGPU target. Select this option if you are going
to install mesa3d with llvm and use Gallium Radeon driver.
endif
comment "llvm needs a toolchain w/ threads, C++, gcc >= 4.8, host gcc >= 4.8"
depends on BR2_PACKAGE_LLVM_ARCH_SUPPORTS
depends on !BR2_TOOLCHAIN_HAS_THREADS || !BR2_INSTALL_LIBSTDCPP || \

9
package/llvm/llvm.mk
View File

@ -45,6 +45,15 @@ LLVM_CONF_OPTS = -DLLVM_TARGETS_TO_BUILD="$(subst $(space),;,$(LLVM_TARGETS_TO_B
HOST_LLVM_CONF_OPTS += -DLLVM_TARGET_ARCH=$(LLVM_TARGET_ARCH)
LLVM_CONF_OPTS += -DLLVM_TARGET_ARCH=$(LLVM_TARGET_ARCH)
# Build AMDGPU backend
# We need to build AMDGPU backend for both host and target because
# llvm-config --targets built (host variant installed in STAGING) will
# output only $(LLVM_TARGET_ARCH) if not, and mesa3d won't build as
# it thinks AMDGPU backend is not installed on the target.
ifeq ($(BR2_PACKAGE_LLVM_AMDGPU),y)
LLVM_TARGETS_TO_BUILD += AMDGPU
endif
# Use native llvm-tblgen from host-llvm (needed for cross-compilation)
LLVM_CONF_OPTS += -DLLVM_TABLEGEN=$(HOST_DIR)/bin/llvm-tblgen