Use LLVM JIT for MemorySanitizer GN builds

Only the LLVM JIT supports MemorySanitizer instrumentation, so don't use Subzero for MSan builds. Bug: b/155148722 Change-Id: I286107b08f36bc1083568353361cfca5947dd4d7 Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/50308Reviewed-by: Alexis Hétu <sugoi@google.com> Tested-by: Nicolas Capens <nicolascapens@google.com> Kokoro-Result: kokoro <noreply+kokoro@google.com>

Use LLVM JIT for MemorySanitizer GN builds
e4c1a25c · Nicolas Capens · Nicolas Capens · fd0d0441 · e4c1a25c
Commit e4c1a25c authored Nov 12, 2020 by Nicolas Capens Committed by Nicolas Capens Nov 13, 2020
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BUILD.gn src/Reactor/BUILD.gn +2 -2

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--- a/src/Reactor/BUILD.gn
+++ b/src/Reactor/BUILD.gn
@@ -16,9 +16,9 @@ import("../swiftshader.gni")
 declare_args() {
  # Subzero produces smaller binaries, but doesn't support ARM64, MIPS64, and
-  # PPC64.
+  # PPC64. It also doesn't support MemorySanitizer instrumentation.
  use_swiftshader_with_subzero =
-      current_cpu != "arm64" && current_cpu != "mips64el" && current_cpu != "ppc64"
+      current_cpu != "arm64" && current_cpu != "mips64el" && current_cpu != "ppc64" && !is_msan
  supports_llvm = is_linux || is_chromeos || is_fuchsia || is_win || is_android || is_mac
 }