commit 54574d3272b5d0bb35d82fd8f5941703d91ef087
author David Green <david.green@arm.com> Sat Nov 04 11:47:05 2023 +0000
committer GitHub <noreply@github.com> Sat Nov 04 11:47:05 2023 +0000
tree 3fcaf7b2519bc2e829d2ea4adbfd294339412b04
parent cd6022916bff1d6fab007b554810b631549ba43c

[AArch64][GlobalISel] Expand handling for fptosi and fptoui (#70635)

Now that we have more types handled for zext/sext and trunc, it is
possible to get more types working for the vector float to integer
conversions. This patch adds fp16, widening and narrowing vector support
to handle more types. The smaller types wil be expanded to the size of
the larger element type. A couple of case require more awkward truncates
to get working as they go from illegal to illegal types.

llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 1087684..00d9f3f 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -5124,7 +5124,9 @@
   }
   case TargetOpcode::G_TRUNC:
   case TargetOpcode::G_FPTRUNC:
-  case TargetOpcode::G_FPEXT: {
+  case TargetOpcode::G_FPEXT:
+  case TargetOpcode::G_FPTOSI:
+  case TargetOpcode::G_FPTOUI: {
     if (TypeIdx != 0)
       return UnableToLegalize;
     Observer.changingInstr(MI);