Subzero. X86. Fixes bundle lock/unlock.

The AutoMemorySandboxer does not have to emit a bundle lock/unlock pair for memory operations in x8632, but the current does emit it. This CL changes this behavior. BUG= R=stichnot@chromium.org Review URL: https://codereview.chromium.org/1661403002 .

Subzero. X86. Fixes bundle lock/unlock.
8347abda · John Porto · 844211e7 · 8347abda
Commit 8347abda authored Feb 04, 2016 by John Porto
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IceTargetLoweringX86Base.h src/IceTargetLoweringX86Base.h +3 -1

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--- a/src/IceTargetLoweringX86Base.h
+++ b/src/IceTargetLoweringX86Base.h
@@ -469,7 +469,9 @@ protected:
                                         ? nullptr
                                         : findMemoryReference(Args...)) {
      if (MemOperand != nullptr) {
-        Bundler = makeUnique<AutoBundle>(Target, BundleLockOpt);
+        if (Traits::Is64Bit) {
+          Bundler = makeUnique<AutoBundle>(Target, BundleLockOpt);
+        }
        *MemOperand = Target->_sandbox_mem_reference(*MemOperand);
      }
    }