[PATCH] D103010: [PowerPC] Export 16 byte load-store instructions

[Kai Luo via Phabricator via llvm-commits]

lkail added inline comments.


================
Comment at: llvm/test/CodeGen/PowerPC/ldst-16-byte.mir:2
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -simplify-mir -verify-machineinstrs -mtriple=powerpc64-ibm-aix-xcoff \
+# RUN:   -stop-after=postrapseudos %s -o - | FileCheck %s
----------------
jsji wrote:
> How about powerpc32? 
I guess it's not supported in powerpc32 mode, though I can't find where it is documented(It's documented in AIX assembly manual that `ldarx` and `stdcx` are not supported in powerpc32 mode). I've tried following on AIX-7.2
```
main:
  lq 2,128(4)
  stq 2,128(4)
  lqarx 2,3,4
  lqarx 2,3,4,1
  stqcx. 2,3,4

# as above code
as -a64 -mpwr8 enc.s
objdump -D a.out
```
It gives correct dump result.
```
0000000000000000 <.text>:
   0:   e0 44 00 80     lq      r2,128(r4)
   4:   f8 44 00 82     stq     r2,128(r4)
   8:   7c 43 22 28     lqarx   r2,r3,r4
   c:   7c 43 22 29     lqarx   r2,r3,r4,1
  10:   7c 43 21 6d     stqcx.  r2,r3,r4
```
But for `as -a32 -mpwr8 enc.s`, the result is not correct.
```
00000000 <.text>:
   0:   e0 44 00 80     lfq     f2,128(r4)
   4:   f8 44 00 82     .long 0xf8440082
   8:   7c 43 22 28     .long 0x7c432228
   c:   7c 43 22 29     .long 0x7c432229
  10:   7c 43 21 6d     .long 0x7c43216d
```



Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D103010/new/

https://reviews.llvm.org/D103010