[compiler-rt] Allow Fuchsia to use 64-bit allocator for RISCV

[PiJoules]

The allocator should be tuned well enough for Fuchsia+RISCV.

[llvmbot]

@llvm/pr-subscribers-compiler-rt-sanitizer

Changes

The allocator should be tuned well enough for Fuchsia+RISCV.

---

Full diff: https://github.com/llvm/llvm-project/pull/68343.diff

1 Files Affected:

• (modified) compiler-rt/lib/sanitizer_common/sanitizer_platform.h (+2-1)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
index c1ca5c9ca44783b..903a71210286e00 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
@@ -284,7 +284,8 @@
 // For such platforms build this code with -DSANITIZER_CAN_USE_ALLOCATOR64=0 or
 // change the definition of SANITIZER_CAN_USE_ALLOCATOR64 here.
 #ifndef SANITIZER_CAN_USE_ALLOCATOR64
-#  if SANITIZER_RISCV64 || SANITIZER_IOS || SANITIZER_DRIVERKIT
+#  if (SANITIZER_RISCV64 && !SANITIZER_FUCHSIA) || SANITIZER_IOS || \
+      SANITIZER_DRIVERKIT
 #    define SANITIZER_CAN_USE_ALLOCATOR64 0
 #  elif defined(__mips64) || defined(__hexagon__)
 #    define SANITIZER_CAN_USE_ALLOCATOR64 0