[test-suite] Add Architecture Detection for RISC-V
Summary:
The LLVM test suite has its own way of detecting the system
architecture. This adds support in that file for detecting RISC-V.
This will eventually cause the ARCH variable to be populated.
We use ARCH="riscv64" to identify 64-bit RISC-V, and ARCH="riscv32" to identify 32-bit
RISC-V, so that attempting to detect "riscv" in the ARCH variable will match any version of RISC-V.
Reviewers: asb, luismarques
Reviewed By: luismarques
Subscribers: mgorny, simoncook, kito-cheng, shiva0217, rogfer01, rkruppe, PkmX, s.egerton, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D68698
llvm-svn: 374176
diff --git a/cmake/modules/DetectArchitecture.c b/cmake/modules/DetectArchitecture.c
index ef488b5..35f7c0b 100644
--- a/cmake/modules/DetectArchitecture.c
+++ b/cmake/modules/DetectArchitecture.c
@@ -8,6 +8,12 @@
const char *str = "ARCHITECTURE IS Mips";
#elif defined(__powerpc__) || defined(__ppc__) || defined(__power__)
const char *str = "ARCHITECTURE IS PowerPC";
+#elif defined(__riscv)
+#if __riscv_xlen == 64
+const char *str = "ARCHITECTURE IS riscv64";
+#elif __riscv_xlen == 32
+const char *str = "ARCHITECTURE IS riscv32";
+#endif
#elif defined(__s390__)
const char *str = "ARCHITECTURE IS SystemZ";
#elif defined(__sparc__)
