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a65da70a54
This reapplies r225379.
ChangeLog:
- The assertion that this commit previously ran into about the inability
to handle indirect variables has since been removed and the backend
can handle this now.
- Testcases were upgrade to the new MDLocation format.
- Instead of keeping a DebugDeclares map, we now use
llvm::FindAllocaDbgDeclare().
Original commit message follows.
Debug info: Teach SROA how to update debug info for fragmented variables.
This allows us to generate debug info for extremely advanced code such as
typedef struct { long int a; int b;} S;
int foo(S s) {
return s.b;
}
which at -O1 on x86_64 is codegen'd into
define i32 @foo(i64 %s.coerce0, i32 %s.coerce1) #0 {
ret i32 %s.coerce1, !dbg !24
}
with this patch we emit the following debug info for this
TAG_formal_parameter [3]
AT_location( 0x00000000
0x0000000000000000 - 0x0000000000000006: rdi, piece 0x00000008, rsi, piece 0x00000004
0x0000000000000006 - 0x0000000000000008: rdi, piece 0x00000008, rax, piece 0x00000004 )
AT_name( "s" )
AT_decl_file( "/Volumes/Data/llvm/_build.ninja.release/test.c" )
Thanks to chandlerc, dblaikie, and echristo for their feedback on all
previous iterations of this patch!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226598 91177308-0d34-0410-b5e6-96231b3b80d8
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| .. | ||
| AArch64 | ||
| ARM | ||
| COFF | ||
| Inputs | ||
| Mips | ||
| PowerPC | ||
| Sparc | ||
| SystemZ | ||
| X86 | ||
| 2009-10-16-Phi.ll | ||
| 2009-11-03-InsertExtractValue.ll | ||
| 2009-11-05-DeadGlobalVariable.ll | ||
| 2009-11-06-NamelessGlobalVariable.ll | ||
| 2009-11-10-CurrentFn.ll | ||
| 2010-01-05-DbgScope.ll | ||
| 2010-03-12-llc-crash.ll | ||
| 2010-03-19-DbgDeclare.ll | ||
| 2010-03-24-MemberFn.ll | ||
| 2010-03-30-InvalidDbgInfoCrash.ll | ||
| 2010-04-06-NestedFnDbgInfo.ll | ||
| 2010-04-19-FramePtr.ll | ||
| 2010-05-03-DisableFramePtr.ll | ||
| 2010-05-03-OriginDIE.ll | ||
| 2010-05-10-MultipleCU.ll | ||
| 2010-06-29-InlinedFnLocalVar.ll | ||
| 2010-07-19-Crash.ll | ||
| 2010-10-01-crash.ll | ||
| arm-relocs.test | ||
| array.ll | ||
| block-asan.ll | ||
| bug_null_debuginfo.ll | ||
| constant-pointers.ll | ||
| cross-cu-inlining.ll | ||
| cross-cu-linkonce-distinct.ll | ||
| cross-cu-linkonce.ll | ||
| cu-range-hole.ll | ||
| cu-ranges.ll | ||
| dead-argument-order.ll | ||
| debug-info-always-inline.ll | ||
| debug-info-qualifiers.ll | ||
| debuginfofinder-multiple-cu.ll | ||
| debuglineinfo.test | ||
| duplicate_inline.ll | ||
| dwarf-public-names.ll | ||
| dwarfdump-accel.test | ||
| dwarfdump-debug-frame-simple.test | ||
| dwarfdump-debug-loc-simple.test | ||
| dwarfdump-dump-flags.test | ||
| dwarfdump-line-dwo.test | ||
| dwarfdump-objc.test | ||
| dwarfdump-pubnames.test | ||
| dwarfdump-ranges.test | ||
| dwarfdump-type-units.test | ||
| dwarfdump-zlib.test | ||
| empty.ll | ||
| enum-types.ll | ||
| enum.ll | ||
| global.ll | ||
| gmlt.test | ||
| incorrect-variable-debugloc1.ll | ||
| incorrect-variable-debugloc.ll | ||
| inheritance.ll | ||
| inline-debug-info-multiret.ll | ||
| inline-debug-info.ll | ||
| inline-no-debug-info.ll | ||
| inline-scopes.ll | ||
| inlined-arguments.ll | ||
| inlined-vars.ll | ||
| llvm-symbolizer-zlib.test | ||
| llvm-symbolizer.test | ||
| lto-comp-dir.ll | ||
| member-order.ll | ||
| member-pointers.ll | ||
| member-pointers.o | ||
| missing-abstract-variable.ll | ||
| missing-abstract-variable.o | ||
| multiline.ll | ||
| namespace_function_definition.ll | ||
| namespace_inline_function_definition.ll | ||
| namespace.ll | ||
| nodebug.ll | ||
| PR20038.ll | ||
| restrict.ll | ||
| sugared-constants.ll | ||
| template-recursive-void.ll | ||
| tu-composite.ll | ||
| tu-member-pointer.ll | ||
| two-cus-from-same-file.ll | ||
| typedef.ll | ||
| unconditional-branch.ll | ||
| varargs.ll | ||
| version.ll | ||