[llvm] [RISCV][llvm-exegesis] Add missing operand frm for FCVT_D_W (PR #149989)

[Jim Lin via llvm-commits]

https://github.com/tclin914 created https://github.com/llvm/llvm-project/pull/149989

We encountered the index of operand out of bounds crash because FCVT_D_W lacks frm operand.

>From 33b313b64ed23de49e2857306fcdc47ec044cfdf Mon Sep 17 00:00:00 2001
From: Jim Lin <jim at andestech.com>
Date: Tue, 22 Jul 2025 15:59:44 +0800
Subject: [PATCH] [RISCV][llvm-exegesis] Add missing operand frm for FCVT_D_W

We encountered the index of operand out of bounds crash because FCVT_D_W lacks frm operand.
---
 llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp b/llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp
index 676479b3d5792..d54df2b5dc0ef 100644
--- a/llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp
+++ b/llvm/tools/llvm-exegesis/lib/RISCV/Target.cpp
@@ -651,8 +651,10 @@ static std::vector<MCInst> loadFP64RegBits32(const MCSubtargetInfo &STI,
   }
 
   std::vector<MCInst> Instrs = loadIntReg(STI, ScratchIntReg, Bits);
-  Instrs.push_back(
-      MCInstBuilder(RISCV::FCVT_D_W).addReg(Reg).addReg(ScratchIntReg));
+  Instrs.push_back(MCInstBuilder(RISCV::FCVT_D_W)
+                       .addReg(Reg)
+                       .addReg(ScratchIntReg)
+                       .addImm(7));
   return Instrs;
 }