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PR #32812: [XLA:CPU] Add support for riscv64 #33519

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Merged
copybara-service merged 1 commit into from
Nov 5, 2025
Merged

PR #32812: [XLA:CPU] Add support for riscv64 #33519

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4 changes: 4 additions & 0 deletions third_party/hwloc/hwloc.BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -272,6 +272,10 @@ cc_library(
"hwloc/topology-linux.c",
"include/hwloc/linux.h",
],
"@xla//xla/tsl:linux_riscv64": [
"hwloc/topology-linux.c",
"include/hwloc/linux.h",
],
"@xla//xla/tsl:linux_s390x": [
"hwloc/topology-linux.c",
"include/hwloc/linux.h",
Expand Down
1 change: 1 addition & 0 deletions third_party/mkl_dnn/mkldnn_v1.BUILD
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Expand Up @@ -220,6 +220,7 @@ cc_library(
"@xla//xla/tsl:linux_aarch64": ["-lrt"],
"@xla//xla/tsl:linux_x86_64": ["-lrt"],
"@xla//xla/tsl:linux_ppc64le": ["-lrt"],
"@xla//xla/tsl:linux_riscv64": ["-lrt"],
"//conditions:default": [],
}),
textual_hdrs = _TEXTUAL_HDRS_LIST,
Expand Down
5 changes: 5 additions & 0 deletions xla/backends/cpu/codegen/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ load(
"//xla/tsl/platform:build_config_root.bzl",
"if_llvm_aarch64_available",
"if_llvm_powerpc_available",
"if_llvm_riscv_available",
"if_llvm_system_z_available",
"if_llvm_x86_available",
)
Expand Down Expand Up @@ -164,6 +165,8 @@ xla_cc_test(
"@llvm-project//llvm:AArch64CodeGen", # fixdeps: keep
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
]) + if_llvm_x86_available([
Expand Down Expand Up @@ -286,6 +289,8 @@ cc_library(
"@llvm-project//llvm:AArch64CodeGen", # fixdeps: keep
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
]) + if_llvm_x86_available([
Expand Down
3 changes: 3 additions & 0 deletions xla/backends/cpu/codegen/tools/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ load(
"//xla/tsl/platform:build_config_root.bzl",
"if_llvm_aarch64_available",
"if_llvm_powerpc_available",
"if_llvm_riscv_available",
"if_llvm_system_z_available",
"if_llvm_x86_available",
)
Expand Down Expand Up @@ -38,6 +39,8 @@ cc_library(
"@llvm-project//llvm:AArch64CodeGen", # fixdeps: keep
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
]) + if_llvm_x86_available([
Expand Down
4 changes: 4 additions & 0 deletions xla/codegen/intrinsic/BUILD
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ load(
"//xla/tsl/platform:build_config_root.bzl",
"if_llvm_aarch64_available",
"if_llvm_powerpc_available",
"if_llvm_riscv_available",
"if_llvm_system_z_available",
"if_llvm_x86_available",
)
Expand Down Expand Up @@ -149,6 +150,9 @@ cc_library(
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCAsmParser", # fixdeps: keep
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVAsmParser", # fixdeps: keep
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZAsmParser", # fixdeps: keep
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
Expand Down
5 changes: 5 additions & 0 deletions xla/service/cpu/BUILD
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Expand Up @@ -19,6 +19,7 @@ load(
"//xla/tsl/platform:build_config_root.bzl",
"if_llvm_aarch64_available",
"if_llvm_powerpc_available",
"if_llvm_riscv_available",
"if_llvm_system_z_available",
"if_llvm_x86_available",
)
Expand Down Expand Up @@ -392,6 +393,8 @@ cc_library(
"@llvm-project//llvm:AArch64CodeGen", # fixdeps: keep
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
]) + if_llvm_x86_available([
Expand Down Expand Up @@ -2120,6 +2123,8 @@ cc_library(
"@llvm-project//llvm:AArch64CodeGen", # fixdeps: keep
]) + if_llvm_powerpc_available([
"@llvm-project//llvm:PowerPCCodeGen", # fixdeps: keep
]) + if_llvm_riscv_available([
"@llvm-project//llvm:RISCVCodeGen", # fixdeps: keep
]) + if_llvm_system_z_available([
"@llvm-project//llvm:SystemZCodeGen", # fixdeps: keep
]) + if_llvm_x86_available([
Expand Down
3 changes: 3 additions & 0 deletions xla/service/cpu/test_target_triple_helper.h
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Expand Up @@ -23,6 +23,9 @@ static const char kTargetTripleForHost[] = "aarch64-unknown-linux-gnu";
defined(__ppc__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__))
static const char kTargetCpuForHost[] = "ppc";
static const char kTargetTripleForHost[] = "ppc64le-ibm-linux-gnu";
#elif defined(__riscv) && (__riscv_xlen == 64)
static const char kTargetCpuForHost[] = "";
static const char kTargetTripleForHost[] = "riscv64-unknown-linux-gnu";
#elif defined(__s390x__)
static const char kTargetCpuForHost[] = "s390x";
static const char kTargetTripleForHost[] = "systemz-none-linux-gnu";
Expand Down
20 changes: 20 additions & 0 deletions xla/tsl/BUILD
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Expand Up @@ -316,6 +316,16 @@ config_setting(
visibility = ["//visibility:public"],
)

config_setting(
name = "linux_riscv64",
constraint_values =
[
"@platforms//cpu:riscv64",
"@platforms//os:linux",
],
visibility = ["//visibility:public"],
)

config_setting(
name = "linux_s390x",
constraint_values =
Expand Down Expand Up @@ -382,6 +392,15 @@ selects.config_setting_group(
visibility = ["//visibility:public"],
)

selects.config_setting_group(
name = "riscv64_or_cross",
match_any = [
":linux_riscv64",
":with_cross_compiler_support",
],
visibility = ["//visibility:public"],
)

selects.config_setting_group(
name = "s390x_or_cross",
match_any = [
Expand Down Expand Up @@ -453,6 +472,7 @@ selects.config_setting_group(
":linux_aarch64",
":linux_armhf",
":linux_ppc64le",
":linux_riscv64",
":linux_s390x",
":linux_x86_64",
],
Expand Down
2 changes: 2 additions & 0 deletions xla/tsl/framework/contraction/BUILD
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Expand Up @@ -113,6 +113,7 @@ cc_library(
"//xla/tsl:fuchsia_x86_64": [],
"//xla/tsl:ios": [],
"//xla/tsl:linux_ppc64le": [],
"//xla/tsl:linux_riscv64": [],
"//xla/tsl:linux_s390x": [],
"//xla/tsl:macos_arm64": [],
"//conditions:default": [
Expand All @@ -132,6 +133,7 @@ cc_library(
"//xla/tsl:fuchsia_x86_64": [],
"//xla/tsl:ios": [],
"//xla/tsl:linux_ppc64le": [],
"//xla/tsl:linux_riscv64": [],
"//xla/tsl:linux_s390x": [],
"//xla/tsl:macos_arm64": [],
"//conditions:default": ["//xla/tsl/mkl:onednn"],
Expand Down
2 changes: 2 additions & 0 deletions xla/tsl/platform/build_config_root.bzl
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Expand Up @@ -11,6 +11,7 @@ load(
_if_llvm_aarch64_available = "if_llvm_aarch64_available",
_if_llvm_arm_available = "if_llvm_arm_available",
_if_llvm_powerpc_available = "if_llvm_powerpc_available",
_if_llvm_riscv_available = "if_llvm_riscv_available",
_if_llvm_system_z_available = "if_llvm_system_z_available",
_if_llvm_x86_available = "if_llvm_x86_available",
_if_pywrap = "if_pywrap",
Expand All @@ -32,6 +33,7 @@ if_llvm_aarch32_available = _if_llvm_aarch32_available
if_llvm_aarch64_available = _if_llvm_aarch64_available
if_llvm_arm_available = _if_llvm_arm_available
if_llvm_powerpc_available = _if_llvm_powerpc_available
if_llvm_riscv_available = _if_llvm_riscv_available
if_llvm_system_z_available = _if_llvm_system_z_available
if_llvm_x86_available = _if_llvm_x86_available
if_static = _if_static
Expand Down
6 changes: 6 additions & 0 deletions xla/tsl/platform/default/build_config_root.bzl
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Expand Up @@ -144,6 +144,12 @@ def if_llvm_powerpc_available(then, otherwise = []):
"//conditions:default": otherwise,
})

def if_llvm_riscv_available(then, otherwise = []):
return select({
str(Label("//xla/tsl:riscv64_or_cross")): then,
"//conditions:default": otherwise,
})

def if_llvm_system_z_available(then, otherwise = []):
return select({
str(Label("//xla/tsl:s390x_or_cross")): then,
Expand Down
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