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printing it as %st(0) when its encoded in the instruction.
This is a step back from the change I made in r352985. This appears to be more consistent with gcc and objdump behavior.
llvm-svn: 353015
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as the clobber name to make MS inline asm work correctly"
Looking into gcc and objdump behavior more this was overly aggressive. If the register is encoded in the instruction we should print %st(0), if its implicit we should print %st.
I'll be making a more directed change in a future patch.
llvm-svn: 353013
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name to make MS inline asm work correctly
Summary:
When calculating clobbers for MS style inline assembly we fail if the asm clobbers stack top because we print st(0) and try to pass it through the gcc register name check. This was found with when I attempted to make a emms/femms clobber all ST registers. If you use emms/femms in MS inline asm we would try to use st(0) as the clobber name but clang would think that wasn't a valid clobber name.
This also matches what objdump disassembly prints. It's also what is printed by gcc -S.
Reviewers: RKSimon, rnk, efriedma, spatel, andreadb, lebedev.ri
Reviewed By: rnk
Subscribers: eraman, gbedwell, lebedev.ri, llvm-commits
Differential Revision: https://reviews.llvm.org/D57621
llvm-svn: 352985
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encoding for the I86, I186, I286, I386, I486, PPRO and MMX isa sets.<NFC>
NFC.
Adding MC regressions tests to cover the I86, I186, I286, I386, I486, PPRO and MMX isa sets.
This patch is part of a larger task to cover MC encoding of all X86 ISA Sets.
Started in revision: https://reviews.llvm.org/D39952
Reviewers: zvi, RKSimon, AndreiGrischenko, craig.topper
Differential Revision: https://reviews.llvm.org/D40879
Change-Id: I231a35861611bfd3d23c74cc59507373f021a629
llvm-svn: 322544
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