From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 5 Aug 2009 10:06:37 +0000 (-0700)
Subject: X86: Make the check for negative operands for sign multiply more direct.
X-Git-Tag: Calvin_Submission~163
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2914a8eb16cd5a3804bdd500458cff2d2c413869;p=gem5.git

X86: Make the check for negative operands for sign multiply more direct.
---

diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa
index f2a574954..f2e16a515 100644
--- a/src/arch/x86/isa/microops/regop.isa
+++ b/src/arch/x86/isa/microops/regop.isa
@@ -530,10 +530,9 @@ let {{
             hiResult = ((psrc1_l * psrc2_h + psrc1_h * psrc2_l +
                         ((psrc1_l * psrc2_l) / shifter)) /shifter) +
                        psrc1_h * psrc2_h;
-            if (spsrc1 < 0)
+            if (bits(psrc1, dataSize * 8 - 1))
                 hiResult -= op2;
-            int64_t bigSop2 = sop2;
-            if (bigSop2 < 0)
+            if (bits(op2, dataSize * 8 - 1))
                 hiResult -= psrc1;
             ProdHi = hiResult;
             '''