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@huonw Great! I thought it was a bug similar to #16337
nodakai
changed the title
x86_64 asm!: some types of constraints don't work
asm!: constraints to select specific registers are undocumented
Oct 9, 2014
None of the "a" -- "d" constraints (to use the
eax
--edx
registers) works as expected.If I enable the commented-out line, I get:
But Clang/LLVM 3.0 (Ubuntu 12.04 package) understands them:
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