From: Mike Pall <mike>
Date: Wed, 27 Jul 2022 09:32:33 +0000 (+0200)
Subject: x86/x64: Limit VLOAD fusion to simple cases.
X-Git-Tag: v2.1.ROLLING~53
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1339aed3db2fb8488a170383fc456fe04879709;p=thirdparty%2FLuaJIT.git

x86/x64: Limit VLOAD fusion to simple cases.

Reported by ccagml.
---

diff --git a/src/lj_asm_x86.h b/src/lj_asm_x86.h
index 4465efa2..2bf9d939 100644
--- a/src/lj_asm_x86.h
+++ b/src/lj_asm_x86.h
@@ -485,7 +485,8 @@ static Reg asm_fuseload(ASMState *as, IRRef ref, RegSet allow)
 	asm_fusexref(as, ir->op1, xallow);
 	return RID_MRM;
       }
-    } else if (ir->o == IR_VLOAD && !(LJ_GC64 && irt_isaddr(ir->t))) {
+    } else if (ir->o == IR_VLOAD && IR(ir->op1)->o == IR_AREF &&
+	       !(LJ_GC64 && irt_isaddr(ir->t))) {
       asm_fuseahuref(as, ir->op1, xallow);
       as->mrm.ofs += 8 * ir->op2;
       return RID_MRM;