diff options
| author | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2015-04-15 22:29:27 +0000 |
|---|---|---|
| committer | Duncan P. N. Exon Smith <dexonsmith@apple.com> | 2015-04-15 22:29:27 +0000 |
| commit | 62e0f454a03d4989c1646563ba2e8d87c5753964 (patch) | |
| tree | 91db3029c5d0fb66ec7991cfb41c415af55f6fd0 /llvm/test/Transforms/Inline/alloca-dbgdeclare.ll | |
| parent | 4bdc50eccb1d41bc51232a55e734a70da8ae5ee2 (diff) | |
| download | bcm5719-llvm-62e0f454a03d4989c1646563ba2e8d87c5753964.tar.gz bcm5719-llvm-62e0f454a03d4989c1646563ba2e8d87c5753964.zip | |
DebugInfo: Remove 'inlinedAt:' field from MDLocalVariable
Remove 'inlinedAt:' from MDLocalVariable. Besides saving some memory
(variables with it seem to be single largest `Metadata` contributer to
memory usage right now in -g -flto builds), this stops optimization and
backend passes from having to change local variables.
The 'inlinedAt:' field was used by the backend in two ways:
1. To tell the backend whether and into what a variable was inlined.
2. To create a unique id for each inlined variable.
Instead, rely on the 'inlinedAt:' field of the intrinsic's `!dbg`
attachment, and change the DWARF backend to use a typedef called
`InlinedVariable` which is `std::pair<MDLocalVariable*, MDLocation*>`.
This `DebugLoc` is already passed reliably through the backend (as
verified by r234021).
This commit removes the check from r234021, but I added a new check
(that will survive) in r235048, and changed the `DIBuilder` API in
r235041 to require a `!dbg` attachment whose 'scope:` is in the same
`MDSubprogram` as the variable's.
If this breaks your out-of-tree testcases, perhaps the script I used
(mdlocalvariable-drop-inlinedat.sh) will help; I'll attach it to PR22778
in a moment.
llvm-svn: 235050
Diffstat (limited to 'llvm/test/Transforms/Inline/alloca-dbgdeclare.ll')
| -rw-r--r-- | llvm/test/Transforms/Inline/alloca-dbgdeclare.ll | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/test/Transforms/Inline/alloca-dbgdeclare.ll b/llvm/test/Transforms/Inline/alloca-dbgdeclare.ll index eb912f5ce2f..7e649a22863 100644 --- a/llvm/test/Transforms/Inline/alloca-dbgdeclare.ll +++ b/llvm/test/Transforms/Inline/alloca-dbgdeclare.ll @@ -128,7 +128,7 @@ attributes #3 = { noreturn nounwind } !43 = !{!37, !37, i64 0} !44 = !{!38, !38, i64 0} !45 = !MDLocation(line: 9, scope: !15) -!46 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p1", line: 6, arg: 1, scope: !15, file: !16, type: !"_ZTS1A", inlinedAt: !47) +!46 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "p1", line: 6, arg: 1, scope: !15, file: !16, type: !"_ZTS1A") !47 = distinct !MDLocation(line: 11, scope: !21) !48 = !MDExpression(DW_OP_bit_piece, 32, 160) !49 = !MDLocation(line: 6, scope: !15, inlinedAt: !47) |
