[clang] [llvm] [DXIL] implement dot intrinsic lowering for integers (PR #85662)

[via cfe-commits]

dyung wrote:

Hi @farzonl, your commit is causing at least one test failure on a build bot:
https://lab.llvm.org/buildbot/#/builders/139/builds/61732
```
******************** TEST 'Clang :: SemaHLSL/BuiltIns/dot-errors.hlsl' FAILED ********************
Exit Code: 1
Command Output (stderr):
--
RUN: at line 1: /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang -cc1 -internal-isystem /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/lib/clang/19/include -nostdsysteminc -finclude-default-header -triple dxil-pc-shadermodel6.6-library /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl -fnative-half-type -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
+ /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/bin/clang -cc1 -internal-isystem /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/lib/clang/19/include -nostdsysteminc -finclude-default-header -triple dxil-pc-shadermodel6.6-library /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl -fnative-half-type -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
error: 'expected-error' diagnostics expected but not seen: 
  File /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl Line 117 (directive at /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl:118): passing 'double2' (aka 'vector<double, 2>') to parameter of incompatible type '__attribute__((__vector_size__(2 * sizeof(float)))) float' (vector of 2 'float' values)
1 error generated.
--
********************
```
Other failing buildbots include:
- https://lab.llvm.org/buildbot/#/builders/216/builds/36204
- https://lab.llvm.org/buildbot/#/builders/247/builds/15516
- https://lab.llvm.org/buildbot/#/builders/280/builds/469

Can you take a look and revert if you need time to investigate?

https://github.com/llvm/llvm-project/pull/85662