Clang fails to optimize in-sequence extract operations

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Clang fails to optimize in-sequence extract operations #11583

Open llvmbot opened 12 years ago

llvmbot commented 12 years ago


Bugzilla Link	11211
Version	trunk
OS	Linux
Attachments	C and disasm, int16_t -> float conversion test case.
Reporter	LLVM Bugzilla Contributor

Extended Description

Implementing a trivial float to int16_t conversion routine, Clang is unable to optimize 8 subsequent extract/store operations into one single unaligned store.

Code and x86_64 disasm in attachment.

llvmbot commented 12 years ago

Added similar bug. This one for int16_t -> float conversion.