Giacomo Travaglini has submitted this change. (
https://gem5-review.googlesource.com/c/public/gem5/+/56605 )
(
5 is the latest approved patch-set.
No files were changed between the latest approved patch-set and the
submitted one.
)Change subject: arch-arm: Add warning when DVM is enabled in the decoder
......................................................................
arch-arm: Add warning when DVM is enabled in the decoder
DVM Ops instructions are micro-architecturally modelled as loads. This
will tamper the effective number of loads stat, so a user should
be careful when interpreting stat results
JIRA: https://gem5.atlassian.net/browse/GEM5-1097
Change-Id: I526cd542ef804111cf6919359c1ce02df6d4710d
Signed-off-by: Giacomo Travaglini <[email protected]>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56605
Reviewed-by: Andreas Sandberg <[email protected]>
Maintainer: Andreas Sandberg <[email protected]>
Tested-by: kokoro <[email protected]>
---
M src/arch/arm/decoder.cc
1 file changed, 27 insertions(+), 0 deletions(-)
Approvals:
Andreas Sandberg: Looks good to me, approved; Looks good to me, approved
kokoro: Regressions pass
diff --git a/src/arch/arm/decoder.cc b/src/arch/arm/decoder.cc
index 18b8c04..4385744 100644
--- a/src/arch/arm/decoder.cc
+++ b/src/arch/arm/decoder.cc
@@ -65,6 +65,13 @@
// Initialize SVE vector length
sveLen = (dynamic_cast<ISA *>(params.isa)
->getCurSveVecLenInBitsAtReset() >> 7) - 1;
+
+ if (dvmEnabled) {
+ warn_once(
+ "DVM Ops instructions are micro-architecturally "
+ "modelled as loads. This will tamper the effective "
+ "number of loads stat\n");
+ }
}
void
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I526cd542ef804111cf6919359c1ce02df6d4710d
Gerrit-Change-Number: 56605
Gerrit-PatchSet: 8
Gerrit-Owner: Giacomo Travaglini <[email protected]>
Gerrit-Reviewer: Andreas Sandberg <[email protected]>
Gerrit-Reviewer: Giacomo Travaglini <[email protected]>
Gerrit-Reviewer: kokoro <[email protected]>
Gerrit-MessageType: merged
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