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DebugInfo: Preserve debug location information when transforming a call into an invoke during inlining.

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This both improves basic debug info quality, but also fixes a larger
hole whenever we inline a call/invoke without a location (debug info for
the entire inlining is lost and other badness that the debug info
emission code is currently working around but shouldn't have to).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212065 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Blaikie 2014-06-30 20:30:39 +00:00
parent 0e2313c1c8
commit 6408a8b836
2 changed files with 38 additions and 0 deletions
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1
lib/Transforms/Utils/InlineFunction.cpp
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@ -189,6 +189,7 @@ static void HandleCallsInBlockInlinedThroughInvoke(BasicBlock *BB,
InvokeInst *II = InvokeInst::Create(CI->getCalledValue(), Split,
Invoke.getOuterResumeDest(),
InvokeArgs, CI->getName(), BB);
II->setDebugLoc(CI->getDebugLoc());
II->setCallingConv(CI->getCallingConv());
II->setAttributes(CI->getAttributes());

37
test/Transforms/Inline/debug-invoke.ll Normal file
View File

@ -0,0 +1,37 @@
; RUN: opt < %s -always-inline -S | FileCheck %s
; Test that the debug location is preserved when rewriting an inlined call as an invoke
; CHECK: invoke void @test()
; CHECK-NEXT: to label {{.*}} unwind label {{.*}}, !dbg [[INL_LOC:!.*]]
; CHECK: [[EMPTY:.*]] = metadata !{}
; CHECK: [[INL_LOC]] = metadata !{i32 1, i32 0, metadata [[EMPTY]], metadata [[INL_AT:.*]]}
; CHECK: [[INL_AT]] = metadata !{i32 2, i32 0, metadata [[EMPTY]], null}
declare void @test()
declare i32 @__gxx_personality_v0(...)
attributes #0 = { alwaysinline }
define void @inl() #0 {
call void @test(), !dbg !3
ret void
}
define void @caller() {
invoke void @inl()
to label %cont unwind label %lpad, !dbg !4
cont:
ret void
lpad:
landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
cleanup
ret void
}
!llvm.module.flags = !{!1}
!1 = metadata !{i32 2, metadata !"Debug Info Version", i32 1}
!2 = metadata !{}
!3 = metadata !{i32 1, i32 0, metadata !2, null}
!4 = metadata !{i32 2, i32 0, metadata !2, null}