[llvm] [GlobalIsel] Enabling more rules for fp constant folding (PR #177902)

[Julian Pokrovsky via llvm-commits]

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@@ -689,6 +689,13 @@ def constant_fold_fsqrt : constant_fold_unary_fp_op_rule<G_FSQRT>;
 def constant_fold_flog2 : constant_fold_unary_fp_op_rule<G_FLOG2>;
 def constant_fold_fptrunc : constant_fold_unary_fp_op_rule<G_FPTRUNC>;
 def constant_fold_fpext : constant_fold_unary_fp_op_rule<G_FPEXT>;
+def constant_fold_fceil : constant_fold_unary_fp_op_rule<G_FCEIL>;
+def constant_fold_ffloor : constant_fold_unary_fp_op_rule<G_FFLOOR>;
+def constant_fold_intrinsic_trunc : constant_fold_unary_fp_op_rule<G_INTRINSIC_TRUNC>;
+def constant_fold_intrinsic_round : constant_fold_unary_fp_op_rule<G_INTRINSIC_ROUND>;
+def constant_fold_intrinsic_roundeven : constant_fold_unary_fp_op_rule<G_INTRINSIC_ROUNDEVEN>;
+def constant_fold_frint : constant_fold_unary_fp_op_rule<G_FRINT>;
+def constant_fold_fnearbyint : constant_fold_unary_fp_op_rule<G_FNEARBYINT>;
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raventid wrote:

Probably we can add even more syntactic sugar to generate those statements, but I don't think it is necessary 🤷 

https://github.com/llvm/llvm-project/pull/177902