1 files changed, 27 insertions, 0 deletions
diff --git a/pkgs/servers/nosql/mongodb/mozjs-45_fix-3-byte-opcode.patch b/pkgs/servers/nosql/mongodb/mozjs-45_fix-3-byte-opcode.patch
new file mode 100644
index 00000000000..8c60cdd1e68
--- /dev/null
+++ b/pkgs/servers/nosql/mongodb/mozjs-45_fix-3-byte-opcode.patch
@@ -0,0 +1,27 @@
+# HG changeset patch
+# User Dan Gohman <sunfish@mozilla.com>
+# Parent  d9b405d82cffb07343a5f2fd941e029298c7f6c4
+# Bug 1390214 - IonMonkey: Don't test for a 3-byte opcode in a 2-byte opcode predicate.
+# https://bug1390214.bmoattachments.org/attachment.cgi?id=8902972
+
+diff --git a/src/third_party/mozjs-45/extract/js/src/jit/x86-shared/Encoding-x86-shared.h b/src/third_party/mozjs-45/extract/js/src/jit/x86-shared/Encoding-x86-shared.h
+--- a/src/third_party/mozjs-45/extract/js/src/jit/x86-shared/Encoding-x86-shared.h
++++ b/src/third_party/mozjs-45/extract/js/src/jit/x86-shared/Encoding-x86-shared.h
+@@ -310,17 +310,16 @@ enum ThreeByteOpcodeID {
+ 
+ // Test whether the given opcode should be printed with its operands reversed.
+ inline bool IsXMMReversedOperands(TwoByteOpcodeID opcode)
+ {
+     switch (opcode) {
+       case OP2_MOVSD_WsdVsd: // also OP2_MOVPS_WpsVps
+       case OP2_MOVAPS_WsdVsd:
+       case OP2_MOVDQ_WdqVdq:
+-      case OP3_PEXTRD_EdVdqIb:
+         return true;
+       default:
+         break;
+     }
+     return false;
+ }
+ 
+ enum ThreeByteEscape {