Don't mark math fns as nounwind, just willreturn

[wsmoses]

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diff --git a/src/compiler.jl b/src/compiler.jl
index 153c42cb..9f6dd733 100644
--- a/src/compiler.jl
+++ b/src/compiler.jl
@@ -1056,13 +1056,13 @@ end
     attrs = if LLVM.version().major <= 15
         LLVM.Attribute[LLVM.EnumAttribute("readnone"), StringAttribute("enzyme_shouldrecompute"),
                     EnumAttribute("willreturn"),
-                    EnumAttribute("nosync"),
+            EnumAttribute("nosync"),
                     EnumAttribute("nofree"),
 		      ]
     else
         LLVM.Attribute[EnumAttribute("memory", NoEffects.data), StringAttribute("enzyme_shouldrecompute"),
                     EnumAttribute("willreturn"),
-                    EnumAttribute("nosync"),
+            EnumAttribute("nosync"),
 		    EnumAttribute("nofree")]
     end
     handleCustom(state, custom, k_name, llvmfn, name, attrs)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.79%. Comparing base (f9dd728) to head (0dc2660).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2807      +/-   ##
==========================================
- Coverage   67.81%   67.79%   -0.03%     
==========================================
  Files          58       58              
  Lines       20717    20723       +6     
==========================================
- Hits        14050    14049       -1     
- Misses       6667     6674       +7     

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Benchmark Results

	main	0dc2660...	main / 0dc2660...
basics/make_zero/namedtuple	0.0522 ± 0.0023 μs	0.0527 ± 0.0026 μs	0.991 ± 0.065
basics/make_zero/struct	0.255 ± 0.0059 μs	0.259 ± 0.0057 μs	0.984 ± 0.031
basics/overhead	4.03 ± 0.051 ns	5.26 ± 0.01 ns	0.766 ± 0.0098
basics/remake_zero!/namedtuple	0.241 ± 0.0076 μs	0.236 ± 0.0086 μs	1.02 ± 0.049
basics/remake_zero!/struct	0.233 ± 0.009 μs	0.237 ± 0.0085 μs	0.98 ± 0.052
fold_broadcast/multidim_sum_bcast/1D	10.3 ± 0.22 μs	10.3 ± 0.47 μs	0.993 ± 0.05
fold_broadcast/multidim_sum_bcast/2D	12.1 ± 0.26 μs	12.1 ± 0.26 μs	0.999 ± 0.03
time_to_load	1.25 ± 0.017 s	1.26 ± 0.034 s	0.989 ± 0.03

Benchmark Plots

A plot of the benchmark results has been uploaded as an artifact at https://github.com/EnzymeAD/Enzyme.jl/actions/runs/19643004634/artifacts/4663546068.