DPC++ compiler crashes during SYCL-CTS test build.

[bader]

I see failure in pre-commit for KhronosGroup/SYCL-CTS#741.
From: https://github.com/KhronosGroup/SYCL-CTS/actions/runs/5406893408/jobs/9824294810

sycl-post-link: /__w/llvm/llvm/src/llvm/tools/sycl-post-link/SpecConstants.cpp:506: llvm::Instruction* {anonymous}::emitSpecConstant(unsigned int, llvm::Type*, llvm::Instruction*, llvm::Constant*): Assertion `DefaultValue && "default value of spec constant is expected to be known"' failed.
PLEASE submit a bug report to https://github.com/intel/llvm/issues and include the crash backtrace.
Stack dump:
0.	Program arguments: /opt/sycl/bin/sycl-post-link -split=auto -emit-param-info -symbols -emit-exported-symbols -split-esimd -lower-esimd -O3 -spec-const=rt -device-globals -o /tmp/accessor_default_values_core-c0a0db.table /tmp/accessor_default_values_core-bcf2c7.bc
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0  sycl-post-link 0x0000565301a04640
1  sycl-post-link 0x0000565301a024b4
2  libc.so.6      0x00007fb5e99db520
3  libc.so.6      0x00007fb5e9a2fa7c pthread_kill + 300
4  libc.so.6      0x00007fb5e99db476 raise + 22
5  libc.so.6      0x00007fb5e99c17f3 abort + 211
6  libc.so.6      0x00007fb5e99c171b
7  libc.so.6      0x00007fb5e99d2e96
8  sycl-post-link 0x00005653017ca288
9  sycl-post-link 0x00005653017c9af4
10 sycl-post-link 0x00005653017c9d62
11 sycl-post-link 0x00005653017cc997
12 sycl-post-link 0x00005653017a3e86
13 sycl-post-link 0x0000565301930649
14 sycl-post-link 0x00005653017b2718
15 sycl-post-link 0x000056530172e005
16 libc.so.6      0x00007fb5e99c2d90
17 libc.so.6      0x00007fb5e99c2e40 __libc_start_main + 128
18 sycl-post-link 0x00005653017a33e5
clang++: error: unable to execute command: Aborted (core dumped)
clang++: error: sycl-post-link command failed due to signal (use -v to see invocation)
clang version 17.0.0 (https://github.com/intel/llvm 2ddb42c40c6737ce9faaecfdc9c5f684eba237e4)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/sycl/bin
clang++: note: diagnostic msg: Error generating preprocessed source(s).
ninja: build stopped: subcommand failed.
Error: Process completed with exit code 1.

DPC++ compiler version: 2ddb42c.