Some -L and -l flags may be needed even when building librustc_llvm,
for example when using static libc++ on Linux we may need to manually
specify the library search path and -ldl -lpthread as additional link
dependencies. We pass LLVM linker flags from config to librustc_llvm
build to make sure these cases are handled.

This commit extends the work in rust-lang#61698 to get the `DefId` of const
parameters from block that resolve to a const parameter (as well as
const parameters directly, as it was previously).

Closes rust-lang#60709.

…crichton

Pass LLVM linker flags to librustc_llvm build

Some -L and -l flags may be needed even when building librustc_llvm,
for example when using static libc++ on Linux we may need to manually
specify the library search path and -ldl -lpthread as additional link
dependencies. We pass LLVM linker flags from config to librustc_llvm
build to make sure these cases are handled.

Add ui test for issue 51301

Closes rust-lang#51301

…enkov

typeck: small refactoring, add 'fn write_resolution'

…expr-count-sequel, r=varkor

typeck: Fix ICE for blocks in repeat expr count.

Fixes rust-lang#61336 (again). This PR fixes an ICE that occured when a block expression resolving to a const generic was used for the count of an array repeat expression.

r? @varkor

Issue rust-lang#60709 test

Adds a test for rust-lang#60709, which was fixed as part of rust-lang#59897.

r? @cramertj