[llvm-bugs] [Bug 37962] New: [debugify] callsite-splitting fail

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jun 27 08:38:56 PDT 2018


            Bug ID: 37962
           Summary: [debugify] callsite-splitting fail
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: greg.bedwell at sony.com
                CC: anastasis.gramm2 at gmail.com, davide at freebsd.org,
                    llvm-bugs at lists.llvm.org, vsk at apple.com
            Blocks: 37953

Created attachment 20480
  --> https://bugs.llvm.org/attachment.cgi?id=20480&action=edit
ll reproducer

$ clang -v
clang version 7.0.0 (trunk 335708) (llvm/trunk 335721)
Target: x86_64-pc-windows-msvc
Thread model: posix
InstalledDir: e:\work\upstream-llvm\build-vs2015-native-ninja\bin

$ cat call-site_splitting.cpp
int foo(int aa, int bb) {
  return aa + bb;
void bar(int& cc, int dd) {
  cc = foo(cc && 2 | cc, dd);

$ clang call-site_splitting.cpp -O0 -Xclang -disable-O0-optnone -emit-llvm -S
-o - | opt -instcombine -S -o callsite-splitting-input.ll

$ opt callsite-splitting-input.ll -disable-output -debugify-each
CheckFunctionDebugify [Call-site splitting]: PASS
CheckFunctionDebugify [Module Verifier]: PASS
ERROR: Instruction with empty DebugLoc in function ?bar@@YAXAEAHH at Z -- 
%phi.call = phi i32 [ %call1, %land.rhs.split ], [ %call2, %entry.split ]
WARNING: Missing line 7
CheckFunctionDebugify [Call-site splitting]: FAIL
CheckFunctionDebugify [Module Verifier]: PASS


Referenced Bugs:

[Bug 37953] [meta] [debugify] fix -check-debugify failures
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