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Use apple-m1 as the base mcpu for aarch64-apple-darwin #44347

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Mar 16, 2022
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Use apple-m1 as the base mcpu for aarch64-apple-darwin #44347

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Use apple-m1 as the base march for aarch64-apple-darwin 
Since the Apple devkits are all presumably returned to Apple at this
point, it doesn't make sense to continue to build for the earlier a12
model, we should just build for the M1 explicitly.  LLVM supports
`-mcpu=apple-m1` since LLVM 13.0.0-rc1 [0].  Clang 13 (ships with
Xcode 13) understands this, so it's a safe bet that this can be used
with the C compiler that is generating this code as well.

[0]
llvm/llvm-project@a8a3a43
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@staticfloat
staticfloat committed Feb 25, 2022
commit 78657b8fb544c1419f7f732d3c93e5fb57e728a6
2 changes: 1 addition & 1 deletion Make.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -903,7 +903,7 @@ USE_BLAS64:=1
BINARY:=64
ifeq ($(OS),Darwin)
# Apple Chips are all at least A12Z
MCPU:=apple-a12
MCPU:=apple-m1
endif
endif

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