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Solidify the assumption that a DW_TAG_subprogram's type is a DW_TAG_subroutine_type

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There were bits & pieces of code lying around that may've given the
impression that debug info metadata supported the possibility that a
subprogram's type could be specified by a non-subroutine type describing
the return type of a void function. This support was incomplete &
unnecessary. Asserts & API have been changed to make the desired usage
more clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182532 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie
2013-05-22 23:22:18 +00:00
parent 62c320a755
commit 3d33184d9d
5 changed files with 23 additions and 38 deletions
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8
lib/IR/DIBuilder.cpp
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@@ -969,13 +969,15 @@ DISubprogram DIBuilder::createFunction(DIDescriptor Context,
StringRef Name,
StringRef LinkageName,
DIFile File, unsigned LineNo,
DIType Ty,
DICompositeType Ty,
bool isLocalToUnit, bool isDefinition,
unsigned ScopeLine,
unsigned Flags, bool isOptimized,
Function *Fn,
MDNode *TParams,
MDNode *Decl) {
assert(Ty.getTag() == dwarf::DW_TAG_subroutine_type &&
"function types should be subroutines");
Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),
@@ -1014,7 +1016,7 @@ DISubprogram DIBuilder::createMethod(DIDescriptor Context,
StringRef Name,
StringRef LinkageName,
DIFile F,
unsigned LineNo, DIType Ty,
unsigned LineNo, DICompositeType Ty,
bool isLocalToUnit,
bool isDefinition,
unsigned VK, unsigned VIndex,
@@ -1023,6 +1025,8 @@ DISubprogram DIBuilder::createMethod(DIDescriptor Context,
bool isOptimized,
Function *Fn,
MDNode *TParam) {
assert(Ty.getTag() == dwarf::DW_TAG_subroutine_type &&
"function types should be subroutines");
Value *TElts[] = { GetTagConstant(VMContext, DW_TAG_base_type) };
Value *Elts[] = {
GetTagConstant(VMContext, dwarf::DW_TAG_subprogram),