[llvm-bugs] [Bug 32323] Potential incorrect generation of store-pair

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Mar 30 10:18:16 PDT 2017


Pirama Arumuga Nainar <pirama at google.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #8 from Pirama Arumuga Nainar <pirama at google.com> ---
Kristof, thanks for looking into this.  With r278562 cherry-picked on top of
r276452, I find that the stp gets replaced with a str and the write of zero to
[sp+40] is moved above the conflicting right:

$ diff t.276452_278562.s t.276452.no-partial-overwrite.s
<       str     xzr, [sp, #40]
<       .loc    1 126 48                // t.cpp:126:48
<       str     x8, [sp, #32]
>       .loc    1 115 34 discriminator 1 // t.cpp:115:34
>       stp     x8, xzr, [sp, #32]

I'll close this bug as not reproducible on ToT.

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