Tim Northover 8f2a85e099 IR: add "cmpxchg weak" variant to support permitted failure. ... This commit adds a weak variant of the cmpxchg operation, as described in C++11. A cmpxchg instruction with this modifier is permitted to fail to store, even if the comparison indicated it should. As a result, cmpxchg instructions must return a flag indicating success in addition to their original iN value loaded. Thus, for uniformity *all* cmpxchg instructions now return "{ iN, i1 }". The second flag is 1 when the store succeeded. At the DAG level, a new ATOMIC_CMP_SWAP_WITH_SUCCESS node has been added as the natural representation for the new cmpxchg instructions. It is a strong cmpxchg. By default this gets Expanded to the existing ATOMIC_CMP_SWAP during Legalization, so existing backends should see no change in behaviour. If they wish to deal with the enhanced node instead, they can call setOperationAction on it. Beware: as a node with 2 results, it cannot be selected from TableGen. Currently, no use is made of the extra information provided in this patch. Test updates are almost entirely adapting the input IR to the new scheme. Summary for out of tree users: ------------------------------ + Legacy Bitcode files are upgraded during read. + Legacy assembly IR files will be invalid. + Front-ends must adapt to different type for "cmpxchg". + Backends should be unaffected by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210903 91177308-0d34-0410-b5e6-96231b3b80d8		2014-06-13 14:24:07 +00:00
..
Large	Reduce verbiage of lit.local.cfg files	2014-06-09 22:42:55 +00:00
addr-01.ll
addr-02.ll
addr-03.ll
alias-01.ll	Reenable use of TBAA during CodeGen	2014-04-12 01:26:00 +00:00
alloca-01.ll
alloca-02.ll
and-01.ll
and-02.ll
and-03.ll
and-04.ll
and-05.ll
and-06.ll
and-07.ll
and-08.ll
args-01.ll
args-02.ll
args-03.ll
args-04.ll
args-05.ll
args-06.ll
asm-01.ll
asm-02.ll
asm-03.ll
asm-04.ll
asm-05.ll
asm-06.ll
asm-07.ll
asm-08.ll
asm-09.ll
asm-10.ll
asm-11.ll
asm-12.ll
asm-13.ll
asm-14.ll
asm-15.ll
asm-16.ll
asm-17.ll
asm-18.ll
atomic-load-01.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-load-02.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-load-03.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-load-04.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-store-01.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-store-02.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-store-03.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomic-store-04.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
atomicrmw-add-01.ll
atomicrmw-add-02.ll
atomicrmw-add-03.ll
atomicrmw-add-04.ll
atomicrmw-add-05.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-add-06.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-and-01.ll
atomicrmw-and-02.ll
atomicrmw-and-03.ll
atomicrmw-and-04.ll
atomicrmw-and-05.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-and-06.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-minmax-01.ll
atomicrmw-minmax-02.ll
atomicrmw-minmax-03.ll
atomicrmw-minmax-04.ll
atomicrmw-nand-01.ll
atomicrmw-nand-02.ll
atomicrmw-nand-03.ll
atomicrmw-nand-04.ll
atomicrmw-or-01.ll
atomicrmw-or-02.ll
atomicrmw-or-03.ll
atomicrmw-or-04.ll
atomicrmw-or-05.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-or-06.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-sub-01.ll
atomicrmw-sub-02.ll
atomicrmw-sub-03.ll
atomicrmw-sub-04.ll
atomicrmw-sub-05.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-sub-06.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-xchg-01.ll
atomicrmw-xchg-02.ll
atomicrmw-xchg-03.ll
atomicrmw-xchg-04.ll
atomicrmw-xor-01.ll
atomicrmw-xor-02.ll
atomicrmw-xor-03.ll
atomicrmw-xor-04.ll
atomicrmw-xor-05.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
atomicrmw-xor-06.ll	[SystemZ] Use interlocked-access 1 instructions for CodeGen	2013-12-24 15:18:04 +00:00
branch-01.ll
branch-02.ll
branch-03.ll
branch-04.ll
branch-05.ll
branch-06.ll
branch-07.ll
branch-08.ll
branch-09.ll
branch-10.ll
bswap-01.ll
bswap-02.ll
bswap-03.ll
bswap-04.ll
bswap-05.ll
call-01.ll
call-02.ll
call-03.ll
cmpxchg-01.ll	IR: add "cmpxchg weak" variant to support permitted failure.	2014-06-13 14:24:07 +00:00
cmpxchg-02.ll	IR: add "cmpxchg weak" variant to support permitted failure.	2014-06-13 14:24:07 +00:00
cmpxchg-03.ll	IR: add "cmpxchg weak" variant to support permitted failure.	2014-06-13 14:24:07 +00:00
cmpxchg-04.ll	IR: add "cmpxchg weak" variant to support permitted failure.	2014-06-13 14:24:07 +00:00
cond-load-01.ll
cond-load-02.ll
cond-move-01.ll
cond-store-01.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
cond-store-02.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
cond-store-03.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
cond-store-04.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:49:34 +00:00
cond-store-05.ll
cond-store-06.ll
cond-store-07.ll
cond-store-08.ll
fp-abs-01.ll
fp-abs-02.ll
fp-add-01.ll
fp-add-02.ll
fp-add-03.ll
fp-cmp-01.ll
fp-cmp-02.ll
fp-cmp-03.ll
fp-cmp-04.ll	Fix known typos	2014-01-24 17:20:08 +00:00
fp-const-01.ll
fp-const-02.ll
fp-const-03.ll
fp-const-04.ll
fp-const-05.ll
fp-const-06.ll
fp-const-07.ll
fp-const-08.ll
fp-const-09.ll
fp-conv-01.ll
fp-conv-02.ll
fp-conv-03.ll
fp-conv-04.ll
fp-conv-05.ll
fp-conv-06.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-conv-07.ll
fp-conv-08.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-conv-09.ll
fp-conv-10.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-conv-11.ll
fp-conv-12.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-conv-13.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-conv-14.ll	[SystemZ] Add support for z196 float<->unsigned conversions	2014-03-21 10:56:30 +00:00
fp-copysign-01.ll
fp-div-01.ll
fp-div-02.ll
fp-div-03.ll
fp-move-01.ll
fp-move-02.ll
fp-move-03.ll
fp-move-04.ll
fp-move-05.ll
fp-move-06.ll
fp-move-07.ll
fp-move-08.ll
fp-move-09.ll
fp-mul-01.ll
fp-mul-02.ll
fp-mul-03.ll
fp-mul-04.ll
fp-mul-05.ll
fp-mul-06.ll
fp-mul-07.ll
fp-mul-08.ll
fp-mul-09.ll
fp-neg-01.ll
fp-round-01.ll
fp-round-02.ll
fp-sqrt-01.ll
fp-sqrt-02.ll
fp-sqrt-03.ll
fp-sub-01.ll
fp-sub-02.ll
fp-sub-03.ll
frame-01.ll
frame-02.ll
frame-03.ll
frame-04.ll
frame-05.ll
frame-06.ll
frame-07.ll
frame-08.ll	Fix known typos	2014-01-24 17:20:08 +00:00
frame-09.ll
frame-10.ll
frame-11.ll	[SystemZ] Flesh out stackrestore test (frame-11.ll)	2014-01-13 15:44:44 +00:00
frame-13.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
frame-14.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
frame-15.ll
frame-16.ll
frame-17.ll
frame-18.ll
insert-01.ll
insert-02.ll
insert-03.ll
insert-04.ll
insert-05.ll
insert-06.ll	Extend (truncate (load)) folding	2013-12-11 11:37:27 +00:00
int-abs-01.ll	[SystemZ] Extend integer absolute selection	2013-12-13 15:35:00 +00:00
int-add-01.ll
int-add-02.ll
int-add-03.ll
int-add-04.ll
int-add-05.ll
int-add-06.ll
int-add-07.ll
int-add-08.ll
int-add-09.ll
int-add-10.ll
int-add-11.ll
int-add-12.ll
int-add-13.ll
int-add-14.ll
int-add-15.ll
int-add-16.ll
int-cmp-01.ll
int-cmp-02.ll
int-cmp-03.ll
int-cmp-04.ll
int-cmp-05.ll	[SystemZ] Extend the use of C(L)GFR	2013-12-06 09:56:50 +00:00
int-cmp-06.ll	[SystemZ] Extend the use of C(L)GFR	2013-12-06 09:56:50 +00:00
int-cmp-07.ll
int-cmp-08.ll
int-cmp-09.ll
int-cmp-10.ll
int-cmp-11.ll
int-cmp-12.ll
int-cmp-13.ll
int-cmp-14.ll
int-cmp-15.ll
int-cmp-16.ll
int-cmp-17.ll
int-cmp-18.ll
int-cmp-19.ll
int-cmp-20.ll
int-cmp-21.ll
int-cmp-22.ll
int-cmp-23.ll
int-cmp-24.ll
int-cmp-25.ll
int-cmp-26.ll
int-cmp-27.ll
int-cmp-28.ll
int-cmp-29.ll
int-cmp-30.ll
int-cmp-31.ll
int-cmp-32.ll
int-cmp-33.ll
int-cmp-34.ll
int-cmp-35.ll
int-cmp-36.ll
int-cmp-37.ll
int-cmp-38.ll
int-cmp-39.ll
int-cmp-40.ll
int-cmp-41.ll
int-cmp-42.ll
int-cmp-43.ll
int-cmp-44.ll	Fix known typos	2014-01-24 17:20:08 +00:00
int-cmp-45.ll	Fix known typos	2014-01-24 17:20:08 +00:00
int-cmp-46.ll
int-cmp-47.ll	[SystemZ] Make more use of TMHH	2013-12-13 15:46:55 +00:00
int-cmp-48.ll
int-cmp-49.ll
int-const-01.ll
int-const-02.ll
int-const-03.ll
int-const-04.ll
int-const-05.ll
int-const-06.ll
int-conv-01.ll
int-conv-02.ll
int-conv-03.ll
int-conv-04.ll
int-conv-05.ll
int-conv-06.ll
int-conv-07.ll
int-conv-08.ll
int-conv-09.ll
int-conv-10.ll
int-conv-11.ll
int-div-01.ll	Revert "Add -mcpu=z10 to SystemZ tests."	2013-12-18 23:04:37 +00:00
int-div-02.ll
int-div-03.ll	Revert "Add -mcpu=z10 to SystemZ tests."	2013-12-18 23:04:37 +00:00
int-div-04.ll	Revert "Add -mcpu=z10 to SystemZ tests."	2013-12-18 23:04:37 +00:00
int-div-05.ll
int-div-06.ll
int-move-01.ll
int-move-02.ll
int-move-03.ll
int-move-04.ll
int-move-05.ll
int-move-06.ll
int-move-07.ll
int-move-08.ll
int-move-09.ll
int-mul-01.ll
int-mul-02.ll
int-mul-03.ll
int-mul-04.ll
int-mul-05.ll
int-mul-06.ll
int-mul-07.ll
int-mul-08.ll	Revert "Add -mcpu=z10 to SystemZ tests."	2013-12-18 23:04:37 +00:00
int-neg-01.ll
int-neg-02.ll	[SystemZ] Extend integer absolute selection	2013-12-13 15:35:00 +00:00
int-sub-01.ll
int-sub-02.ll
int-sub-03.ll
int-sub-04.ll
int-sub-05.ll
int-sub-06.ll
int-sub-07.ll
int-sub-08.ll
int-sub-09.ll
la-01.ll
la-02.ll
la-03.ll
la-04.ll
lit.local.cfg	Reduce verbiage of lit.local.cfg files	2014-06-09 22:42:55 +00:00
loop-01.ll
mature-mc-support.ll	Re-commit: Demote EmitRawText call in AsmPrinter::EmitInlineAsm() and remove hasRawTextSupport() call	2014-02-13 14:44:26 +00:00
memchr-01.ll
memchr-02.ll
memcmp-01.ll
memcmp-02.ll
memcpy-01.ll
memcpy-02.ll
memset-01.ll
memset-02.ll
memset-03.ll
memset-04.ll
or-01.ll
or-02.ll
or-03.ll
or-04.ll
or-05.ll
or-06.ll
or-07.ll
or-08.ll
prefetch-01.ll
risbg-01.ll	[SystemZ] Improve risbg-01.ll test	2014-01-13 15:40:25 +00:00
risbg-02.ll
rnsbg-01.ll	[SystemZ] Fix RNSBG bug introduced by r197802	2014-01-09 11:28:53 +00:00
rosbg-01.ll	[SystemZ] Fix RNSBG bug introduced by r197802	2014-01-09 11:28:53 +00:00
rxsbg-01.ll	[SystemZ] Fix RNSBG bug introduced by r197802	2014-01-09 11:28:53 +00:00
selectcc-01.ll	[SystemZ] Optimize selects between 0 and -1	2013-12-06 09:53:09 +00:00
selectcc-02.ll	[SystemZ] Optimize selects between 0 and -1	2013-12-06 09:53:09 +00:00
selectcc-03.ll	[SystemZ] Optimize selects between 0 and -1	2013-12-06 09:53:09 +00:00
serialize-01.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
setcc-01.ll
setcc-02.ll
shift-01.ll
shift-02.ll
shift-03.ll
shift-04.ll	Handle masked rotate amounts	2014-01-09 10:56:42 +00:00
shift-05.ll
shift-06.ll
shift-07.ll
shift-08.ll
shift-09.ll
shift-10.ll	[SystemZ] Optimize (sext (ashr (shl ...), ...))	2014-01-13 15:17:53 +00:00
spill-01.ll	Add TargetLowering::prepareVolatileOrAtomicLoad	2013-12-10 10:36:34 +00:00
strcmp-01.ll
strcmp-02.ll
strcpy-01.ll
strlen-01.ll
strlen-02.ll
tls-01.ll
unaligned-01.ll
xor-01.ll
xor-02.ll
xor-03.ll
xor-04.ll
xor-05.ll
xor-06.ll
xor-07.ll
xor-08.ll