John Brawn f83ab2b3be [ARM] Improve generation of thumb stack accesses ...

Currently when a stack access is out of range of an sp-relative ldr or
str then we jump straight to generating the offset with a literal pool
load or mov32 pseudo-instruction. This patch improves that in two
ways:
 * If the offset is within range of sp-relative add plus an ldr then
   use that.
 * When we use the mov32 pseudo-instruction, if putting part of the
   offset into the ldr will simplify the expansion of the mov32 then
   do so.

Differential Revision: https://reviews.llvm.org/D156875

2023-08-07 17:53:32 +01:00

4.8 KiB

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