From 616dfef086e8f22d29c06c23420a649fcc34c04c Mon Sep 17 00:00:00 2001
From: Matthew Pickering <matthewtpickering@gmail.com>
Date: Mon, 30 Sep 2024 13:44:08 +0100
Subject: [PATCH] Fix registerArch for riscv64
The register allocator doesn't support vector registers on riscv64,
therefore advertise as NoVectors.
Fixes #25314
(cherry picked from commit af59749abb723283fa42b51f62a8ac8b345a7f8f)
---
compiler/GHC/Platform/Reg/Class.hs | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/compiler/GHC/Platform/Reg/Class.hs b/compiler/GHC/Platform/Reg/Class.hs
index e76f8af036a..23b3c24b2a5 100644
--- a/compiler/GHC/Platform/Reg/Class.hs
+++ b/compiler/GHC/Platform/Reg/Class.hs
@@ -49,5 +49,8 @@ registerArch arch =
ArchPPC -> Unified
ArchPPC_64 {} -> Unified
ArchAArch64 -> Unified
- ArchRISCV64 -> Separate
+ -- Support for vector registers not yet implemented for RISC-V
+ -- see panic in `getFreeRegs`.
+ --ArchRISCV64 -> Separate
+ ArchRISCV64 -> NoVectors
_ -> NoVectors
--
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