changeset 0eab2a19847a in /z/repo/m5
details: http://repo.m5sim.org/m5?cmd=changeset;node=0eab2a19847a
description:
X86: Let the integer multiply microop use every other possible source
value.
diffstat:
1 file changed, 9 insertions(+), 2 deletions(-)
src/arch/x86/isa/microops/mediaop.isa | 11 +++++++++--
diffs (21 lines):
diff -r 5355f44912f6 -r 0eab2a19847a src/arch/x86/isa/microops/mediaop.isa
--- a/src/arch/x86/isa/microops/mediaop.isa Mon Aug 17 20:15:16 2009 -0700
+++ b/src/arch/x86/isa/microops/mediaop.isa Mon Aug 17 20:15:16 2009 -0700
@@ -919,8 +919,15 @@
uint64_t result = FpDestReg.uqw;
for (int i = 0; i < items; i++) {
- int srcHiIndex = (i + 1) * srcBits - 1;
- int srcLoIndex = (i + 0) * srcBits;
+ int offset = 0;
+ if (ext & 16) {
+ if (ext & 32)
+ offset = i * (destBits - srcBits);
+ else
+ offset = i * (destBits - srcBits) + srcBits;
+ }
+ int srcHiIndex = (i + 1) * srcBits - 1 + offset;
+ int srcLoIndex = (i + 0) * srcBits + offset;
uint64_t arg1Bits = bits(FpSrcReg1.uqw, srcHiIndex,
srcLoIndex);
uint64_t arg2Bits = bits(FpSrcReg2.uqw, srcHiIndex,
srcLoIndex);
uint64_t resBits;
_______________________________________________
m5-dev mailing list
[email protected]
http://m5sim.org/mailman/listinfo/m5-dev
