Roger Ferrer Ibanez 43e3cefe97 [ARM] Use ADDCARRY / SUBCARRY ... This is a preparatory step for D34515. This change: - makes nodes ISD::ADDCARRY and ISD::SUBCARRY legal for i32 - lowering is done by first converting the boolean value into the carry flag using (_, C) ← (ARMISD::ADDC R, -1) and converted back to an integer value using (R, _) ← (ARMISD::ADDE 0, 0, C). An ARMISD::ADDE between the two operations does the actual addition. - for subtraction, given that ISD::SUBCARRY second result is actually a borrow, we need to invert the value of the second operand and result before and after using ARMISD::SUBE. We need to invert the carry result of ARMISD::SUBE to preserve the semantics. - given that the generic combiner may lower ISD::ADDCARRY and ISD::SUBCARRYinto ISD::UADDO and ISD::USUBO we need to update their lowering as well otherwise i64 operations now would require branches. This implies updating the corresponding test for unsigned. - add new combiner to remove the redundant conversions from/to carry flags to/from boolean values (ARMISD::ADDC (ARMISD::ADDE 0, 0, C), -1) → C - fixes PR34045 - fixes PR34564 Differential Revision: https://reviews.llvm.org/D35192 llvm-svn: 313618		2017-09-19 09:05:39 +00:00
..
AArch64	[LoopVectorizer] Add more testcases for PR33804.	2017-09-18 17:28:15 +00:00
AMDGPU	AMDGPU: Run internalize symbols at -O0	2017-09-19 07:40:11 +00:00
ARC
ARM	[ARM] Use ADDCARRY / SUBCARRY	2017-09-19 09:05:39 +00:00
AVR
BPF	bpf: add inline-asm support	2017-09-18 23:29:36 +00:00
Generic
Hexagon	[IfConversion] More simple, correct dead/kill liveness handling	2017-09-14 15:53:11 +00:00
Inputs
Lanai
Mips	[mips] Pick the right variant of DINS upfront and enable target instruction verification	2017-09-14 10:58:00 +00:00
MIR
MSP430
Nios2
NVPTX
PowerPC	[XRay][CodeGen] Use the current function symbol as the associated symbol for the instrumentation map	2017-09-14 07:08:23 +00:00
SPARC
SystemZ	Move llvm/test/CodeGen/X86/clear-liverange-spillreg.mir to SystemZ. It was in wrong place.	2017-09-14 00:03:23 +00:00
Thumb
Thumb2
WebAssembly	[WebAssembly] Add sign extend instructions from atomics proposal	2017-09-13 00:29:06 +00:00
WinEH
X86	Test commit.	2017-09-19 07:56:20 +00:00
XCore