llvm/test/Linker/2009-09-03-mdnode.ll
Duncan P. N. Exon Smith 83902832de Revert "Revert "DI: Fold constant arguments into a single MDString""
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-03 20:01:09 +00:00

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1.2 KiB
LLVM

; RUN: llvm-as < %s > %t.bc
; RUN: llvm-as < %p/2009-09-03-mdnode2.ll > %t2.bc
; RUN: llvm-link %t.bc %t2.bc
declare void @f() nounwind
define i32 @main(...) nounwind {
entry:
%retval = alloca i32 ; <i32*> [#uses=2]
call void @llvm.dbg.func.start(metadata !0)
store i32 0, i32* %retval
call void @llvm.dbg.stoppoint(i32 4, i32 5, metadata !1)
call void @f()
br label %return
return: ; preds = %entry
%0 = load i32* %retval ; <i32> [#uses=1]
call void @llvm.dbg.stoppoint(i32 5, i32 1, metadata !1)
call void @llvm.dbg.region.end(metadata !0)
ret i32 %0
}
declare void @llvm.dbg.func.start(metadata) nounwind readnone
declare void @llvm.dbg.stoppoint(i32, i32, metadata) nounwind readnone
declare void @llvm.dbg.region.end(metadata) nounwind readnone
!0 = metadata !{metadata !"0x2e\00main\00main\00main\002\000\001\000\006\000\000\000", i32 0, metadata !1, null, null, null, null, null} ; [ DW_TAG_subprogram ]
!1 = metadata !{metadata !"0x11\0012\00ellcc 0.1.0\001\00\000\00\000", metadata !2, null, null, null, null, null} ; [ DW_TAG_compile_unit ]
!2 = metadata !{metadata !"a.c", metadata !"/home/rich/ellcc/test/source"}