a6fb536e5b
When investigating bugs in PDB generation, the first step is often to do the same link with link.exe and then compare PDBs. But comparing PDBs is hard because two completely different byte sequences can both be correct, so it hampers the investigation when you also have to spend time figuring out not just which bytes are different, but also if the difference is meaningful. This patch fixes a couple of cases related to string table emission, hash table emission, and the order in which we emit strings that makes more of our bytes the same as the bytes generated by MS PDBs. Differential Revision: https://reviews.llvm.org/D44810 llvm-svn: 328348
37 lines
1.5 KiB
ArmAsm
37 lines
1.5 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t && mkdir -p %t && cd %t
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# RUN: llvm-mc -filetype=obj -triple=i686-windows-msvc %s -o foo.obj
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# RUN: llc %S/Inputs/bar.ll -filetype=obj -mtriple=i686-windows-msvc -o bar.obj
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# RUN: llvm-lib bar.obj -out:bar.lib
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# RUN: lld-link -debug -pdb:foo.pdb foo.obj bar.lib -out:foo.exe -entry:main
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# RUN: llvm-pdbutil dump -modules %t/foo.pdb | FileCheck %s
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# Make sure that the PDB has module descriptors. foo.obj and bar.lib should be
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# absolute paths, and bar.obj should be the relative path passed to llvm-lib.
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# CHECK: Modules
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# CHECK-NEXT: ============================================================
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# CHECK-NEXT: Mod 0000 | `{{.*pdb-lib.s.tmp[/\\]foo.obj}}`:
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# CHECK-NEXT: Obj: `{{.*pdb-lib.s.tmp[/\\]foo.obj}}`:
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# CHECK-NEXT: debug stream: 10, # files: 0, has ec info: false
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# CHECK-NEXT: pdb file ni: 0 ``, src file ni: 0 ``
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# CHECK-NEXT: Mod 0001 | `bar.obj`:
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# CHECK-NEXT: Obj: `{{.*pdb-lib.s.tmp[/\\]bar.lib}}`:
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# CHECK-NEXT: debug stream: 11, # files: 0, has ec info: false
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# CHECK-NEXT: pdb file ni: 0 ``, src file ni: 0 ``
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# CHECK-NEXT: Mod 0002 | `* Linker *`:
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# CHECK-NEXT: Obj: ``:
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# CHECK-NEXT: debug stream: 12, # files: 0, has ec info: false
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# CHECK-NEXT: pdb file ni: 1 `{{.*foo.pdb}}`, src file ni: 0 ``
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.def _main;
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.scl 2;
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.type 32;
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.endef
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.globl _main
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_main:
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calll _bar
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xor %eax, %eax
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retl
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