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| author | Giacomo Gabrielli <giacomo.gabrielli@arm.com> | 2018-10-23 13:51:52 +0100 |
|---|---|---|
| committer | Giacomo Gabrielli <giacomo.gabrielli@arm.com> | 2019-05-11 09:34:27 +0000 |
| commit | d0e4cdc9c36466a3dbef8c9f9f509cce8f1a6c34 (patch) | |
| tree | 231e5efecbf42e376b5175affddb88304f485013 /src/cpu/simple_thread.hh | |
| parent | c4bc23453133751a1a5858743e6b1266f735d3dc (diff) | |
| download | gem5-d0e4cdc9c36466a3dbef8c9f9f509cce8f1a6c34.tar.xz | |
cpu: Add a memory access predicate
This changeset introduces a new predicate to guard memory accesses.
The most immediate use for this is to allow proper handling of
predicated-false vector contiguous loads and predicated-false
micro-ops of vector gather loads (added in separate changesets).
Change-Id: Ice6894fe150faec2f2f7ab796a00c99ac843810a
Signed-off-by: Giacomo Gabrielli <giacomo.gabrielli@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/17991
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bradley Wang <radwang@ucdavis.edu>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Maintainer: Nikos Nikoleris <nikos.nikoleris@arm.com>
Diffstat (limited to 'src/cpu/simple_thread.hh')
| -rw-r--r-- | src/cpu/simple_thread.hh | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/cpu/simple_thread.hh b/src/cpu/simple_thread.hh index 733047f71..8b5e49a3e 100644 --- a/src/cpu/simple_thread.hh +++ b/src/cpu/simple_thread.hh @@ -117,6 +117,9 @@ class SimpleThread : public ThreadState, public ThreadContext /** Did this instruction execute or is it predicated false */ bool predicate; + /** True if the memory access should be skipped for this instruction */ + bool memAccPredicate; + public: std::string name() const { @@ -576,6 +579,18 @@ class SimpleThread : public ThreadState, public ThreadContext unsigned readStCondFailures() const override { return storeCondFailures; } + bool + readMemAccPredicate() + { + return memAccPredicate; + } + + void + setMemAccPredicate(bool val) + { + memAccPredicate = val; + } + void setStCondFailures(unsigned sc_failures) override { |