Avoid repeated casts in builtins.lp64/llp64 tests to reduce SemIR size (#6702)

This reduces the size of a couple large test files by a few hundred
lines:
```
toolchain/check/testdata/interop/cpp/builtins.llp64.carbon | 4033 +++++++++++++++++++++---------------------------
toolchain/check/testdata/interop/cpp/builtins.lp64.carbon  | 4019 ++++++++++++++++++++---------------------------
2 files changed, 3355 insertions(+), 4697 deletions(-)
```
This commit is contained in:
Nicholas Bishop
2026-02-06 19:09:45 +00:00
committed by GitHub
parent 68182ba37b
commit c7a7688d21
2 changed files with 3355 additions and 4697 deletions
File diff suppressed because it is too large Load Diff
File diff suppressed because it is too large Load Diff