jojo added inline comments.
================
Comment at: lib/Support/TargetParser.cpp:441
@@ +440,3 @@
+ if (Extensions & AArch64::AEK_PROFILE)
+ Features.push_back("+spe");
+
----------------
bsmith wrote:
> For ARM there is a table that defines these extensions and how they map to
> backend features, it would be good to do this in a similar manner.
There is a similar one for aarch64.But only in the context of switch-case,they
can be map to backend features by table look-up. eg,getArchExtName().
We need to judge the value of "Extensions" by means of bit operations here.It
is not possible to use the table.
================
Comment at: lib/Support/TargetParser.cpp:770
@@ +769,3 @@
+ if (A.ID == ARM::AK_ARMV8_2A)
+ Features.push_back("+v8.2a");
+ return A.ID;
----------------
bsmith wrote:
> Why do we need to add these features explicitly, can't we just pass through
> the correct triple?
Sometimes people do not give a complete and standardized triple, which leads to
the obtaining of these features by triple impossible.
It maybe safer to add these features by "-march".
Repository:
rL LLVM
http://reviews.llvm.org/D20089
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