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fcd1037fbe
llvm-mirror/test/DebugInfo/Generic
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Adrian Prantl fcd1037fbe Improve the accuracy of variable ranges .debug_loc location lists. 
For the following motivating example
  bool c();
  void f();
  bool start() {
    bool result = c();
    if (!c()) {
      result = false;
      goto exit;
    }
    f();
    result = true;
  exit:
    return result;
  }

we would previously generate a single DW_AT_const_value(1) because
only the DBG_VALUE in the second-to-last basic block survived
codegen. This patch improves the heuristic used to determine when a
DBG_VALUE is available at the beginning of its variable's enclosing
lexical scope:

- Stop giving singular constants blanket permission to take over the
  entire scope. There is still a special case for constants in the
  function prologue that we also miight want to retire later.

- Use the lexical scope information to determine available-at-entry
  instead of proximity to the function prologue.

After this patch we generate a location list with a more accurate
narrower availability for the constant true value. As a pleasant side
effect, we also generate inline locations instead of location lists
where a loacation covers the entire range of the enclosing lexical
scope.

Measured on compiling llc with four targets this doesn't have an
effect on compile time and reduces the size of the debug info for llc
by ~600K.

rdar://problem/30286912

llvm-svn: 305599
2017-06-16 22:40:04 +00:00
..
2009-10-16-Phi.ll
2009-11-03-InsertExtractValue.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2009-11-05-DeadGlobalVariable.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
2009-11-06-NamelessGlobalVariable.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
2009-11-10-CurrentFn.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-01-05-DbgScope.ll Verifier: Disallow a line number without a file in DISubprogram 2017-02-17 23:57:42 +00:00
2010-03-12-llc-crash.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-03-19-DbgDeclare.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-03-24-MemberFn.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-04-06-NestedFnDbgInfo.ll Reverting 268054 & 268063 as they caused PR27579. 2016-04-30 01:44:07 +00:00
2010-04-19-FramePtr.ll DWARF: Omit DW_AT_APPLE attributes (except ObjC ones) when not targeting LLDB 2016-05-24 21:19:28 +00:00
2010-05-03-DisableFramePtr.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-05-03-OriginDIE.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-05-10-MultipleCU.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
2010-06-29-InlinedFnLocalVar.ll Relax test so that it passes on OS X. 2017-02-02 22:08:25 +00:00
2010-10-01-crash.ll DebugInfo: Emit ranges for functions with DISubprograms but lacking locations on any instructions 2016-12-15 23:17:52 +00:00
accel-table-hash-collisions.ll Revert r301487: Replace HashString algorithm with xxHash64 2017-04-26 23:15:10 +00:00
array.ll Relax test so that it passes on OS X. 2017-02-02 22:08:25 +00:00
block-asan.ll Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
bug_null_debuginfo.ll testcase gardening: update the emissionKind enum to the new syntax. (NFC) 2016-04-01 00:16:49 +00:00
constant-pointers.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
constant-sdnodes-have-dbg-location.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
constantfp-sdnodes-have-dbg-location.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
cross-cu-inlining.ll [DWARF] Force a linkage_name on an inlined subprogram's abstract origin. 2016-04-18 22:41:41 +00:00
cross-cu-linkonce-distinct.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
cross-cu-linkonce.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
cu-range-hole.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
cu-ranges.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dbg-at-specficiation.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
dead-argument-order.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
debug-info-always-inline.ll
debug-info-qualifiers.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
debuginfofinder-forward-declaration.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
debuginfofinder-inlined-cu.ll [StripDeadDebug/DIFinder] Track inlined SPs 2017-04-11 13:32:11 +00:00
debuginfofinder-multiple-cu.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
def-line.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
discriminator.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dwarf-public-names.ll Remove line and file from DINamespace. 2017-04-28 22:25:46 +00:00
empty.ll DebugInfo: Do not emit empty CUs 2017-05-26 18:52:56 +00:00
enum-types.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
enum.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
global.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
gmlt_profiling.ll Remove XFAIL for test/DebugInfo/Generic/gmlt_profiling.ll 2017-02-01 23:28:55 +00:00
gmlt.test Refactor the gmlt tests. (NFC) 2017-02-02 01:21:13 +00:00
gvn.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
incorrect-variable-debugloc1.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
incorrect-variable-debugloc.ll [TBAAVerifier] Be stricter around verifying scalar nodes 2016-12-29 15:47:05 +00:00
indvar-discriminator.ll [IndVarSimplify][DebugLoc] When widening the exit loop condition, correctly reuse the debug location of the original comparison. 2016-10-26 10:28:32 +00:00
inheritance.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inline-debug-info-multiret.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inline-debug-info.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inline-debug-loc.ll [InlineFunction] Do not propagate the callsite debug location to instructions inlined from functions with debug info. 2016-12-07 10:37:26 +00:00
inline-no-debug-info.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inline-scopes.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inlined-arguments.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
inlined-vars.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
instcombine-phi.ll [InstCombine] Folding of a compare with RHS const should merge debug locations 2016-12-14 20:27:22 +00:00
invalid.ll [IR/Verifier] Don't visit DISubprograms more than needed. 2017-02-18 03:02:44 +00:00
licm-hoist-debug-loc.ll [DWARF] Null out the debug locs of (loop invariant) instructions hoisted by LICM in 2017-01-06 18:38:57 +00:00
linkage-name-abstract.ll [DWARF] Put linkage-name on abstract origin even when there's a declaration. 2016-12-02 01:55:17 +00:00
lit.local.cfg
location-verifier.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
lto-comp-dir.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
mainsubprogram.ll [DebugInfo] Add support for DW_AT_main_subprogram on subprograms 2016-11-28 21:32:19 +00:00
member-order.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
member-pointers.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
missing-abstract-variable.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
multiline.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
namespace_function_definition.ll Remove line and file from DINamespace. 2017-04-28 22:25:46 +00:00
namespace_inline_function_definition.ll Remove line and file from DINamespace. 2017-04-28 22:25:46 +00:00
namespace.ll Remove line and file from DINamespace. 2017-04-28 22:25:46 +00:00
nodebug.ll DebugInfo: Do not emit empty CUs 2017-05-26 18:52:56 +00:00
noscopes.ll DebugInfo: Make a Generic test case actually generic (remove datalayout/triple) 2016-12-15 23:39:25 +00:00
partial-constant.ll Improve the accuracy of variable ranges .debug_loc location lists. 2017-06-16 22:40:04 +00:00
piece-verifier.ll [DIExpression] Introduce a dedicated DW_OP_LLVM_fragment operation 2016-12-05 18:04:47 +00:00
PR20038.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
ptrsize.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
recursive_inlining.ll [TBAAVerifier] Be stricter around verifying scalar nodes 2016-12-29 15:47:05 +00:00
restrict.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
simplifycfg_sink_last_inst.ll [DebugInfo] Handle same locations in DILocation::getMergedLocation 2017-01-12 20:34:35 +00:00
skeletoncu.ll DebugInfo: Do not emit empty CUs 2017-05-26 18:52:56 +00:00
store-tail-merge.ll Merge DebugLoc on combined stores; in this case, when combining stores 2017-02-06 22:19:04 +00:00
sugared-constants.ll Improve the accuracy of variable ranges .debug_loc location lists. 2017-06-16 22:40:04 +00:00
sunk-compare.ll Preserve the debug location when CodeGenPrepare sinks a compare instruction into the 2016-10-06 21:43:45 +00:00
template-recursive-void.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
thrownTypes.ll Add support for DW_TAG_thrown_type. 2017-04-26 22:56:44 +00:00
tu-composite.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
tu-member-pointer.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
two-cus-from-same-file.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
typedef.ll Renumber testcase metadata nodes after r290153. 2016-12-22 00:45:21 +00:00
unconditional-branch.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
varargs.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00
version.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
virtual-index.ll DebugInfo: Remove MDString-based type references 2016-04-23 21:08:00 +00:00