From: Jay Foad <jay.foad@amd.com>
Date: Wed, 6 Jul 2022 13:00:32 +0000 (+0100)
Subject: [MachineVerifier] Try harder to verify LiveStacks
X-Git-Tag: upstream/15.0.7~2008
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0d1b5268e8e1dc799c4b5734c0cb4a61168c58b7;p=platform%2Fupstream%2Fllvm.git

[MachineVerifier] Try harder to verify LiveStacks

Verify the LiveStacks analysis after a pass that claims to preserve it,
even if there are no further passes (apart from the verifier itself)
that would use the analysis.

Differential Revision: https://reviews.llvm.org/D129200
---

diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp
index db04f2b..7a008ba 100644
--- a/llvm/lib/CodeGen/MachineVerifier.cpp
+++ b/llvm/lib/CodeGen/MachineVerifier.cpp
@@ -293,6 +293,7 @@ namespace {
       }
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
+      AU.addUsedIfAvailable<LiveStacks>();
       AU.setPreservesAll();
       MachineFunctionPass::getAnalysisUsage(AU);
     }