[RISCV] Remove constant_fold_cast_op from RISCVPostLegalizerCombiner.

topperc · topperc · commit fcacda899fcd · 2024-11-12T23:28:48.000-08:00
This is no longer tested after other recent changes. AArch64 does
have this in their PostLegalizerCombiner.
diff --git a/llvm/lib/Target/RISCV/RISCVCombine.td b/llvm/lib/Target/RISCV/RISCVCombine.td
@@ -24,6 +24,6 @@ def RISCVO0PreLegalizerCombiner: GICombiner<
 def RISCVPostLegalizerCombiner
     : GICombiner<"RISCVPostLegalizerCombinerImpl",
                  [sub_to_add, combines_for_extload, redundant_and,
-                  identity_combines, shift_immed_chain, commute_constant_to_rhs,
-                  constant_fold_cast_op]> {
+                  identity_combines, shift_immed_chain,
+                  commute_constant_to_rhs]> {
 }

Original file line number	Diff line number	Diff line change
`@@ -24,6 +24,6 @@ def RISCVO0PreLegalizerCombiner: GICombiner<`
`24`	`24`	`def RISCVPostLegalizerCombiner`
`25`	`25`	`: GICombiner<"RISCVPostLegalizerCombinerImpl",`
`26`	`26`	`[sub_to_add, combines_for_extload, redundant_and,`
`27`		`- identity_combines, shift_immed_chain, commute_constant_to_rhs,`
`28`		`- constant_fold_cast_op]> {`
	`27`	`+ identity_combines, shift_immed_chain,`
	`28`	`+ commute_constant_to_rhs]> {`
`29`	`29`	`}`