llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-16 14:31:59 +00:00

History

Renato Golin b451f4e376 Improve handling of stack accesses in Thumb-1

Thumb-1 only allows SP-based LDR and STR to be word-sized, and SP-base LDR,
STR, and ADD only allow offsets that are a multiple of 4. Make some changes
to better make use of these instructions:

* Use word loads for anyext byte and halfword loads from the stack.
* Enforce 4-byte alignment on objects accessed in this way, to ensure that
  the offset is valid.
* Do the same for objects whose frame index is used, in order to avoid having
  to use more than one ADD to generate the frame index.
* Correct how many bits of offset we think AddrModeT1_s has.

Patch by John Brawn.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230496 91177308-0d34-0410-b5e6-96231b3b80d8

2015-02-25 14:41:06 +00:00

Analysis

Revert r230280: "Bugfix: SCEVExpander incorrectly marks increment operations as no-wrap"

2015-02-24 16:19:29 +00:00

Assembler

llvm-dis: Stop crashing when dropping debug info

2015-02-25 01:10:03 +00:00

Bindings

…

Bitcode

llvm-dis: Stop crashing when dropping debug info

2015-02-25 01:10:03 +00:00