[llvm] [X86] Don't rely on global -fp-contract=fast on X86 CodeGen tests (PR #158026)

[Evgenii Kudriashov via llvm-commits]

================
@@ -1,14 +1,14 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+avx512f -fp-contract=fast | FileCheck %s --check-prefix=ALL --check-prefix=KNL
-; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=skx -fp-contract=fast | FileCheck %s --check-prefix=ALL --check-prefix=SKX
+; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+avx512f  | FileCheck %s --check-prefix=ALL --check-prefix=KNL
----------------
e-kud wrote:

```suggestion
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+avx512f | FileCheck %s --check-prefix=ALL --check-prefix=KNL
```
Nit. Can we drop double spaces they are in each place where `-fp-conteract=fast` was.

https://github.com/llvm/llvm-project/pull/158026