[clang] [X86] Do not apply fast-math to the logic intriniscs (PR #118603)

[Matt Arsenault via cfe-commits]

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@@ -167,6 +167,8 @@ _mm512_maskz_mullo_epi64(__mmask8 __U, __m512i __A, __m512i __B) {
                                              (__v8di)_mm512_setzero_si512());
 }
 
+#pragma float_control(push)
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arsenm wrote:

Needs tests 

https://github.com/llvm/llvm-project/pull/118603