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-rw-r--r--contrib/llvm-project/llvm/lib/TargetParser/Host.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/contrib/llvm-project/llvm/lib/TargetParser/Host.cpp b/contrib/llvm-project/llvm/lib/TargetParser/Host.cpp
index 2e08c7b12d9d..32941c013c66 100644
--- a/contrib/llvm-project/llvm/lib/TargetParser/Host.cpp
+++ b/contrib/llvm-project/llvm/lib/TargetParser/Host.cpp
@@ -1524,7 +1524,8 @@ StringRef sys::getHostCPUName() {
// Use processor id to detect cpu name.
uint32_t processor_id;
__asm__("cpucfg %[prid], $zero\n\t" : [prid] "=r"(processor_id));
- switch (processor_id & 0xff00) {
+ // Refer PRID_SERIES_MASK in linux kernel: arch/loongarch/include/asm/cpu.h.
+ switch (processor_id & 0xf000) {
case 0xc000: // Loongson 64bit, 4-issue
return "la464";
// TODO: Others.