[llvm-bugs] [Bug 25722] ARM: integrated assembler should replace "ldr rX, =imm" with "mov rX, #imm" if imm can be encoded as immediate

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25722

Peter Smith <peter.smith at linaro.org> changed:

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

--- Comment #16 from Peter Smith <peter.smith at linaro.org> ---
I've put in a fix that has been committed upstream.

ldr rt, =expr will be transformed into mov rt, expr when expr can be evaluated
to a constant and the operands can be represented by an available mov
instruction.

It does not support fixups so if expr can't be evaluated to a constant at the
time ldr rt, =expr is encountered, but can be later in the file then a constant
pool will still be generated.

http://reviews.llvm.org/D20153
http://reviews.llvm.org/D20154
http://reviews.llvm.org/D20155 

committed with revisions:
r269352
r269353
r269354

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