[llvm] r323676 - [MachineVerifier] Add check that renamable operands aren't reserved registers.

[via llvm-commits]

Fix up for review: https://reviews.llvm.org/D42749

 

-- 

Geoff Berry

Employee of Qualcomm Datacenter Technologies, Inc.

Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.  Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

 

From: Galina Kistanova [mailto:gkistanova at gmail.com] 
Sent: Tuesday, January 30, 2018 6:00 PM
To: Geoff Berry <gberry at codeaurora.org>
Cc: Artur Pilipenko via llvm-commits <llvm-commits at lists.llvm.org>
Subject: Re: [llvm] r323676 - [MachineVerifier] Add check that renamable operands aren't reserved registers.

 

Hello Geoff,

This commit broke the test CodeGen/AArch64/machine-outliner.mir on one of our builders:
r323676
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/7621

. . .
Failing Tests (3):
    LLVM :: CodeGen/AArch64/machine-outliner.mir
    LLVM :: CodeGen/ARM/pr25838.ll
    LLVM :: DebugInfo/X86/string-offsets-multiple-cus.ll

Previous revision:
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/7624

Please have a look?

Thanks

Galina

 

On Mon, Jan 29, 2018 at 10:57 AM, Geoff Berry via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org> > wrote:

Author: gberry
Date: Mon Jan 29 10:57:07 2018
New Revision: 323676

URL: http://llvm.org/viewvc/llvm-project?rev=323676 <http://llvm.org/viewvc/llvm-project?rev=323676&view=rev> &view=rev
Log:
[MachineVerifier] Add check that renamable operands aren't reserved registers.

Summary:

Reviewers: qcolombet, MatzeB

Subscribers: arsenm, sdardis, nhaehnle, mcrosier, llvm-commits

Differential Revision: https://reviews.llvm.org/D42449

Modified:
    llvm/trunk/lib/CodeGen/MachineVerifier.cpp

Modified: llvm/trunk/lib/CodeGen/MachineVerifier.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineVerifier.cpp?rev=323676 <http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineVerifier.cpp?rev=323676&r1=323675&r2=323676&view=diff> &r1=323675&r2=323676&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineVerifier.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineVerifier.cpp Mon Jan 29 10:57:07 2018
@@ -1101,12 +1101,14 @@ MachineVerifier::visitMachineOperand(con
           }
         }
       }
-      if (MO->isRenamable() &&
-          ((MO->isDef() && MI->hasExtraDefRegAllocReq()) ||
-           (MO->isUse() && MI->hasExtraSrcRegAllocReq()))) {
-        report("Illegal isRenamable setting for opcode with extra regalloc "
-               "requirements",
-               MO, MONum);
+      if (MO->isRenamable()) {
+        if ((MO->isDef() && MI->hasExtraDefRegAllocReq()) ||
+            (MO->isUse() && MI->hasExtraSrcRegAllocReq()))
+          report("Illegal isRenamable setting for opcode with extra regalloc "
+                 "requirements",
+                 MO, MONum);
+        if (MRI->isReserved(Reg))
+          report("isRenamable set on reserved register", MO, MONum);
         return;
       }
     } else {


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