[llvm] [XCore] Use `softPromoteHalfType` (PR #175142)

[Trevor Gross via llvm-commits]

https://github.com/tgross35 created https://github.com/llvm/llvm-project/pull/175142

Follow suite from other targets.

Fixes the XCore portion of https://github.com/llvm/llvm-project/issues/97975 Fixes the XCore portion of https://github.com/llvm/llvm-project/issues/97981

>From 1039a2989d236b327c00f389dce314c22e3e6ffe Mon Sep 17 00:00:00 2001
From: Trevor Gross <tg at trevorgross.com>
Date: Thu, 8 Jan 2026 23:06:32 -0600
Subject: [PATCH] [XCore] Use `softPromoteHalfType`

Follow suite from other targets.

Fixes the XCore portion of https://github.com/llvm/llvm-project/issues/97975
Fixes the XCore portion of https://github.com/llvm/llvm-project/issues/97981
---
 llvm/lib/Target/XCore/XCoreISelLowering.h | 2 ++
 llvm/test/CodeGen/Generic/half-op.ll      | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/llvm/lib/Target/XCore/XCoreISelLowering.h b/llvm/lib/Target/XCore/XCoreISelLowering.h
index bad6588cad740..46e96315b9a58 100644
--- a/llvm/lib/Target/XCore/XCoreISelLowering.h
+++ b/llvm/lib/Target/XCore/XCoreISelLowering.h
@@ -72,6 +72,8 @@ namespace llvm {
       return XCore::R1;
     }
 
+    bool softPromoteHalfType() const override { return true; }
+
   private:
     const TargetMachine &TM;
     const XCoreSubtarget &Subtarget;
diff --git a/llvm/test/CodeGen/Generic/half-op.ll b/llvm/test/CodeGen/Generic/half-op.ll
index f08c71b187eb1..a8b3f4b979932 100644
--- a/llvm/test/CodeGen/Generic/half-op.ll
+++ b/llvm/test/CodeGen/Generic/half-op.ll
@@ -41,7 +41,7 @@
 ; RUN: %if x86-registered-target         %{ llc %s -o - -mtriple=i686-unknown-linux-gnu          | FileCheck %s --check-prefixes=ALL,CHECK-NEG-ABS,CHECK-COPYSIGN,CHECK-FMA %}
 ; RUN: %if x86-registered-target         %{ llc %s -o - -mtriple=x86_64-pc-windows-msvc          | FileCheck %s --check-prefixes=ALL,CHECK-NEG-ABS,CHECK-COPYSIGN,CHECK-FMA %}
 ; RUN: %if x86-registered-target         %{ llc %s -o - -mtriple=x86_64-unknown-linux-gnu        | FileCheck %s --check-prefixes=ALL,CHECK-NEG-ABS,CHECK-COPYSIGN,CHECK-FMA %}
-; RUN: %if xcore-registered-target       %{ llc %s -o - -mtriple=xcore-unknown-unknown           | FileCheck %s --check-prefixes=ALL,BAD-NEG-ABS,BAD-COPYSIGN,BAD-FMA %}
+; RUN: %if xcore-registered-target       %{ llc %s -o - -mtriple=xcore-unknown-unknown           | FileCheck %s --check-prefixes=ALL,CHECK-NEG-ABS,CHECK-COPYSIGN,CHECK-FMA %}
 ; RUN: %if xtensa-registered-target      %{ llc %s -o - -mtriple=xtensa-none-elf                 | FileCheck %s --check-prefixes=ALL,BAD-NEG-ABS,BAD-COPYSIGN,CHECK-FMA %}
 
 ; Note that arm64ec labels are quoted, hence the `{{"?}}:`.