[llvm] [Attributor][FIX] Replace AANoFPClass MBEC propagation (PR #91030)

[Matt Arsenault via llvm-commits]

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@@ -0,0 +1,357 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes
+; RUN: opt -passes=attributor -S < %s | FileCheck %s --check-prefixes=CHECK
+
+; Verify we do not derive 'nofpclass(inf zero sub norm)' for the argument __x.
+; See https://github.com/llvm/llvm-project/issues/78507
+
+source_filename = "llvm-link"
+target datalayout = "e-p:64:64-p1:64:64-p2:32:32-p3:32:32-p4:64:64-p5:32:32-p6:32:32-p7:160:256:256:32-p8:128:128-p9:192:256:256:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64-S32-A5-G1-ni:7:8:9"
+target triple = "amdgcn-amd-amdhsa"
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.ldexp.f64.i32(double, i32) #0
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.amdgcn.fract.f64(double) #0
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.fma.f64(double, double, double) #0
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.fabs.f64(double) #0
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.rint.f64(double) #0
+
+; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
+declare double @llvm.amdgcn.trig.preop.f64(double, i32) #0
+
+; Function Attrs: alwaysinline mustprogress nofree norecurse nosync nounwind willreturn memory(none)
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arsenm wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/91030