CAS fixes for clang cl mode.

[hjyamauchi]

Three changes:

• Make depscan flags visible.
• Fix an issue that a depscan reponse file is written in the current directory without a unique id/hash in its path, collides with another for an identical source file and causes a build error.
• Fix an issue that causes unexpected cas cache misses due to a temp depscan reponse file path (with a unique id/hash) being specified (incorrectly/unnecessarily) specified as the output object file (the -object-file-name flag) when for code view / pdb debug info is emitted.

[hjyamauchi]

@swift-ci please test llvm

[hjyamauchi]

@swift-ci please test llvm

[hjyamauchi]

@swift-ci please test llvm

[hjyamauchi]

Existing failures

Unresolved Tests (3):
  Clang :: Index/Store/json-with-module.m
  Clang :: Index/Store/json-with-pch.c
  Clang :: Index/Store/syntax-only.c

********************
Failed Tests (7):
  Clang :: Modules/GH154840.cpp
  LLVM :: Transforms/Coroutines/coro-retcon-frame-old.ll
  LLVM :: Transforms/Coroutines/coro-retcon-once-dynamic-nocleanup.ll
  LLVM :: Transforms/Coroutines/coro-retcon-once-dynamic.ll
  LLVM :: Transforms/Coroutines/coro-retcon-swift-coroFrameAlloc.ll
  LLVM :: Transforms/Coroutines/coro-split-swift_coroFrameAlloc.ll
  LLVM :: Transforms/PhaseOrdering/X86/excessive-unrolling.ll

eg. https://ci.swift.org/job/pr-apple-llvm-project-llvm-linux/1071/consoleText

[cachemeifyoucan]

Can you add test case for CL mode?

[hjyamauchi]

Can you add test case for CL mode?

Done. PTAL

[hjyamauchi]

@swift-ci please test llvm

[cachemeifyoucan]

Cool LGTM.

[hjyamauchi]

@swift-ci please test llvm

[hjyamauchi]

For some reason, some flags didn't work on macos and the test failed while it passes on Linux.

I found a style of flags that works for macos/Linux/Windows and updated the test.

Please take another look @cachemeifyoucan

******************** TEST 'Clang :: ClangScanDeps/cas-clang-cl.c' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
rm -rf /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp # RUN: at line 3
+ rm -rf /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp
split-file /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp # RUN: at line 4
+ split-file /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp
/Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/bin/clang --driver-mode=cl -fdepscan=inline -fdepscan-include-tree -Xclang -fcas-path -Xclang /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/cas -c /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/test.c -Xclang -Rcompile-job-cache -v 2>&1 | /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/bin/FileCheck /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c -check-prefix=CACHE-MISS # RUN: at line 6
+ /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/bin/clang --driver-mode=cl -fdepscan=inline -fdepscan-include-tree -Xclang -fcas-path -Xclang /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/cas -c /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/test.c -Xclang -Rcompile-job-cache -v
+ /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/bin/FileCheck /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c -check-prefix=CACHE-MISS
/Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c:14:16: error: CACHE-MISS: expected string not found in input
// CACHE-MISS: remark: compile job cache miss
               ^
<stdin>:1:1: note: scanning from here
clang version 22.0.0git (https://github.com/swiftlang/llvm-project.git ed2495126d5a1fa479168be9879e60b029539ede)
^
<stdin>:13:55: note: possible intended match here
clang: warning: argument unused during compilation: '-Xclang -Rcompile-job-cache' [-Wunused-command-line-argument]
                                                      ^

Input file: <stdin>
Check file: /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/clang/test/ClangScanDeps/cas-clang-cl.c

-dump-input=help explains the following input dump.

Input was:
<<<<<<
            1: clang version 22.0.0git (https://github.com/swiftlang/llvm-project.git ed2495126d5a1fa479168be9879e60b029539ede) 
check:14'0     X~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: no match found
            2: Target: x86_64-pc-windows-msvc 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            3: Thread model: posix 
check:14'0     ~~~~~~~~~~~~~~~~~~~~
            4: InstalledDir: /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/bin 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            5: Build config: +assertions 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~
            6: clang: warning: '/Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/test.c' treated as the '/U' option [-Wslash-u-filename] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            7: clang: note: use '--' to treat subsequent arguments as filenames 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            8: clang: warning: argument unused during compilation: '-fdepscan=inline' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            9: clang: warning: argument unused during compilation: '-fdepscan-include-tree' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           10: clang: warning: argument unused during compilation: '-Xclang -fcas-path' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           11: clang: warning: argument unused during compilation: '-Xclang /Users/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/cas' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           12: clang: warning: argument unused during compilation: '/U sers/ec2-user/jenkins/workspace/pr-apple-llvm-project-llvm-macos/branch-next/llvm-project/build/tools/clang/test/ClangScanDeps/Output/cas-clang-cl.c.tmp/test.c' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           13: clang: warning: argument unused during compilation: '-Xclang -Rcompile-job-cache' [-Wunused-command-line-argument] 
check:14'0     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
check:14'1                                                           ?                                                             possible intended match
>>>>>>

[cachemeifyoucan]

LGTM