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Ignore DBG_VALUE machine instructions while constructing instruction ranges based on location info.

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Machine instruction range consisting of only DBG_VALUE MIs only contributes consecutive labels in assembly output, which is harmless, and empty scope entry in DebugInfo, which confuses debugger tools.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125577 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-02-15 17:56:09 +00:00
parent 6e31b9b8c3
commit d3526eab46
2 changed files with 6 additions and 2 deletions
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4
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@@ -2708,6 +2708,10 @@ bool DwarfDebug::extractScopeInformation() {
continue;
}
// Ignore DBG_VALUE. It does not contribute any instruction in output.
if (MInsn->isDebugValue())
continue;
if (RangeBeginMI) {
// If we have alread seen a beginning of a instruction range and
// current instruction scope does not match scope of first instruction