commit a2c57e1dec7e5641a3cc82dbfb397bea058c03cd
author David Green <david.green@arm.com> Mon Apr 14 21:36:13 2025 +0100
committer David Green <david.green@arm.com> Mon Apr 14 21:36:13 2025 +0100
tree faae40b1b6009d1406e1a7847ca304b21ae263e8
parent 061f87f75f38e80e7494b5f7235103f7f11a36c3

[AArch64][GlobalISel] Remove unnecessary fp convert patterns. NFC

We nowadays legalize the fp converts to legal operations earlier, not requiring
patterns that select to multiple instructions.

llvm/lib/Target/AArch64/AArch64InstrGISel.td

diff --git a/llvm/lib/Target/AArch64/AArch64InstrGISel.td b/llvm/lib/Target/AArch64/AArch64InstrGISel.td
index 2d2b2be..a99019d 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrGISel.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrGISel.td
@@ -324,27 +324,6 @@
                      (vector_extract (v2f32 FPR64:$Rn), (i64 1)))),
            (f32 (FADDPv2i32p (v2f32 FPR64:$Rn)))>;
 
-let Predicates = [HasNEON] in {
-  def : Pat<(v2f64 (sint_to_fp v2i32:$src)),
-            (SCVTFv2f64 (SSHLLv2i32_shift V64:$src, 0))>;
-  def : Pat<(v2f64 (uint_to_fp v2i32:$src)),
-            (UCVTFv2f64 (USHLLv2i32_shift V64:$src, 0))>;
-  def : Pat<(v2f32 (sint_to_fp v2i64:$src)),
-            (FCVTNv2i32 (SCVTFv2f64 V128:$src))>;
-  def : Pat<(v2f32 (uint_to_fp v2i64:$src)),
-            (FCVTNv2i32 (UCVTFv2f64 V128:$src))>;
-
-  def : Pat<(v2i64 (fp_to_sint v2f32:$src)),
-            (FCVTZSv2f64 (FCVTLv2i32 V64:$src))>;
-  def : Pat<(v2i64 (fp_to_uint v2f32:$src)),
-            (FCVTZUv2f64 (FCVTLv2i32 V64:$src))>;
-  def : Pat<(v2i32 (fp_to_sint v2f64:$src)),
-            (XTNv2i32 (FCVTZSv2f64 V128:$src))>;
-  def : Pat<(v2i32 (fp_to_uint v2f64:$src)),
-            (XTNv2i32 (FCVTZUv2f64 V128:$src))>;
-
-}
-
 let Predicates = [HasNoLSE] in {
 def : Pat<(atomic_cmp_swap_i8 GPR64:$addr, GPR32:$desired, GPR32:$new),
           (CMP_SWAP_8 GPR64:$addr, GPR32:$desired, GPR32:$new)>;