[PATCH] D107850: [asan] Implemented intrinsic for the custom calling convention similar used by HWASan for X86.

Vitaly Buka via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Mon Aug 23 17:34:25 PDT 2021


vitalybuka added inline comments.


================
Comment at: llvm/include/llvm/Transforms/Instrumentation/AddressSanitizer.h:166
+  ASanAccessInfo(bool IsWrite, bool CompileKernel, uint8_t AccessSizeIndex);
+};
+
----------------
.cpp file is missing


================
Comment at: llvm/lib/Target/X86/X86MCInstLower.cpp:1426
+  OutStreamer->emitInstruction(MCInstBuilder(X86::AND32ri8)
+                                   .addReg(X86::ECX)
+                                   .addReg(X86::ECX)
----------------
kstoimenov wrote:
> vitalybuka wrote:
> > what is in ECX register here?
> Should be NoRegister. Done.
Why NoRegister update is not reflected in tests?


================
Comment at: llvm/test/CodeGen/X86/asan-check-memaccess-or.ll:94
+; CHECK-NEXT:         movq    [[REG]], %rcx
+; CHECK-NEXT:         andl    $7, %ecx
+; CHECK-NEXT:         addl    $1, %ecx
----------------
What is ECX here?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107850/new/

https://reviews.llvm.org/D107850



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