test/COFF/precomp-link.test

RUN: lld-link %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj %S/Inputs/precomp.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf /summary | FileCheck %s -check-prefix SUMMARY
RUN: llvm-pdbutil dump -types %t.pdb | FileCheck %s

RUN: lld-link %S/Inputs/precomp.obj %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf
RUN: llvm-pdbutil dump -types %t.pdb | FileCheck %s

RUN: lld-link %S/Inputs/precomp-a.obj %S/Inputs/precomp-invalid.obj %S/Inputs/precomp.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf 2>&1 | FileCheck %s -check-prefix FAILURE
RUN: lld-link %S/Inputs/precomp-a.obj %S/Inputs/precomp-invalid.obj %S/Inputs/precomp.obj /nodefaultlib /entry:main /debug:ghash /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf 2>&1 | FileCheck %s -check-prefix FAILURE

FIXME: The following RUN line should fail, regardless of whether debug info is
enabled or not. Normally this would result in an error due to missing _PchSym_
references, but SymbolTable.cpp suppresses such errors. MSVC seems to have a
special case for those symbols and it emits the LNK2011 error.

RUN: lld-link %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf 2>&1 | FileCheck %s -check-prefix FAILURE-MISSING-PRECOMPOBJ

FAILURE: warning: Cannot use debug info for '{{.*}}precomp-invalid.obj' [LNK4099]
FAILURE-NEXT: failed to load reference '{{.*}}precomp.obj': No matching precompiled header could be located.

FAILURE-MISSING-PRECOMPOBJ: warning: Cannot use debug info for '{{.*}}precomp-a.obj' [LNK4099]
FAILURE-MISSING-PRECOMPOBJ-NEXT: failed to load reference '{{.*}}precomp.obj': No matching precompiled header could be located.

Check that a PCH object file with a missing S_OBJNAME record results in an
error. Edit out this record from the yaml-ified object:
  - Kind:            S_OBJNAME
    ObjNameSym:
      Signature:       545589255
      ObjectName:      'F:\svn\lld\test\COFF\precomp\precomp.obj'

RUN: obj2yaml %S/Inputs/precomp.obj | grep -v 'SectionData: *04000000' > %t.precomp.yaml
RUN: sed '/S_OBJNAME/,/ObjectName:/d' < %t.precomp.yaml > precomp-no-objname.yaml
RUN: sed 's/Signature: *545589255/Signature: 0/' < %t.precomp.yaml > precomp-zero-sig.yaml
RUN: yaml2obj precomp-no-objname.yaml -o %t.precomp-no-objname.obj
RUN: yaml2obj precomp-zero-sig.yaml -o %t.precomp-zero-sig.obj

RUN: env LLD_IN_TEST=1 not lld-link %t.precomp-no-objname.obj %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe 2>&1 | FileCheck %s -check-prefix FAILURE-NO-SIGNATURE

RUN: env LLD_IN_TEST=1 not lld-link %t.precomp-zero-sig.obj %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe 2>&1 | FileCheck %s -check-prefix FAILURE-NO-SIGNATURE

FAILURE-NO-SIGNATURE: error: {{.*}}.obj claims to be a PCH object, but does not have a valid signature

Check that two PCH objs with duplicate signatures are an error.

RUN: cp %S/Inputs/precomp.obj %t.precomp-dup.obj

RUN: env LLD_IN_TEST=1 not lld-link %S/Inputs/precomp.obj %t.precomp-dup.obj %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj /nodefaultlib /entry:main /debug /pdb:%t.pdb /out:%t.exe 2>&1 | FileCheck %s -check-prefix FAILURE-DUP-SIGNATURE

FAILURE-DUP-SIGNATURE: error: a PCH object with the same signature has already been provided ({{.*precomp.obj and .*precomp-dup.obj.*}})


CHECK: Types (TPI Stream)
CHECK-NOT: LF_PRECOMP
CHECK-NOT: LF_ENDPRECOMP


Re-run with ghash. Eventually, perhaps this will be the default.

RUN: lld-link %S/Inputs/precomp-a.obj %S/Inputs/precomp-b.obj %S/Inputs/precomp.obj /nodefaultlib /entry:main /debug /debug:ghash /pdb:%t.pdb /out:%t.exe /opt:ref /opt:icf /summary | FileCheck %s -check-prefix SUMMARY
RUN: llvm-pdbutil dump -types %t.pdb | FileCheck %s


SUMMARY:                                     Summary
SUMMARY-NEXT: --------------------------------------------------------------------------------
SUMMARY-NEXT:               3 Input OBJ files (expanded from all cmd-line inputs)
SUMMARY-NEXT:               0 PDB type server dependencies
SUMMARY-NEXT:               1 Precomp OBJ dependencies
SUMMARY-NEXT:            1066 Input type records
SUMMARY-NEXT:           55968 Input type records bytes
SUMMARY-NEXT:             874 Merged TPI records
SUMMARY-NEXT:             170 Merged IPI records
SUMMARY-NEXT:               5 Output PDB strings
SUMMARY-NEXT:             167 Global symbol records
SUMMARY-NEXT:              20 Module symbol records
SUMMARY-NEXT:               3 Public symbol records

// precomp.h
#pragma once
int Function(char A);

// precomp.cpp
#include "precomp.h"

// a.cpp
#include "precomp.h"
int main(void) {
  Function('a');
  return 0;
}

// b.cpp
#include "precomp.h"
int Function(char a) {
  return (int)a;
}

// cl.exe precomp.cpp /Z7 /Ycprecomp.h /c
// cl.exe a.cpp b.cpp /Z7 /Yuprecomp.h /c