tor-browser

commit 776588aa7902ed4bac9831a6127163f24bc13b5b
parent 834918e43e386947cdaae2e5b93d5b96f51f7232
Author: Xuan Chen <henry.chen@oss.cipunited.com>
Date:   Tue, 11 Nov 2025 18:04:46 +0000

Bug 1997517 - Part 1: [mips64] Allow R2 features to be disabled for the simulator. r=anba

The R2 feature is enabled by default, and this patch allows it to be
disabled to test MIPS III compatibility using the simulator.

Differential Revision: https://phabricator.services.mozilla.com/D271756

Diffstat:
M
js/src/jit/mips-shared/Architecture-mips-shared.cpp
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/js/src/jit/mips-shared/Architecture-mips-shared.cpp b/js/src/jit/mips-shared/Architecture-mips-shared.cpp
@@ -31,7 +31,9 @@ static uint32_t get_mips_flags() {
 
 #if defined(JS_SIMULATOR_MIPS64)
   flags |= HWCAP_FPU;
-  flags |= HWCAP_R2;
+  if (!getenv("MIPS_PRE_R2")) {
+    flags |= HWCAP_R2;
+  }
 #else
 #  ifdef __linux__
   FILE* fp = fopen("/proc/cpuinfo", "r");