Evan Cheng c143dd4f63 Fix buggy fcopysign lowering. ... This define float @foo(float %x, float %y) nounwind readnone { entry: %0 = tail call float @copysignf(float %x, float %y) nounwind readnone ret float %0 } Was compiled to: vmov s0, r1 bic r0, r0, #-2147483648 vmov s1, r0 vcmpe.f32 s0, #0 vmrs apsr_nzcv, fpscr it lt vneglt.f32 s1, s1 vmov r0, s1 bx lr This fails to copy the sign of -0.0f because it's lost during the float to int conversion. Also, it's sub-optimal when the inputs are in GPR registers. Now it uses integer and + or operations when it's profitable. And it's correct! lsrs r1, r1, #31 bfi r0, r1, #31, #1 bx lr rdar://8984306 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125357 91177308-0d34-0410-b5e6-96231b3b80d8		2011-02-11 02:28:55 +00:00
..
Alpha	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
ARM	Fix buggy fcopysign lowering.	2011-02-11 02:28:55 +00:00
Blackfin	Remove TargetInstrInfo::copyRegToReg entirely.	2010-07-11 17:01:17 +00:00
CBackend
CellSPU	Allow sign-extending of i8 and i16 to i128 on SPU.	2011-01-20 15:49:06 +00:00
CPP
Generic	fix rdar://8878965, a regression I introduced with the recent	2011-01-18 20:53:04 +00:00
MBlaze	Lower the MBlaze target specific calling conventions for "interrupt_handler"	2010-12-15 20:27:28 +00:00
Mips	Add mips o32 tests again with the hope that the buildbot won't complaint again	2011-02-10 23:37:20 +00:00
MSP430	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
PowerPC	Restore the behavior of frame lowering before my refactoring.	2010-12-18 19:53:14 +00:00
PTX	ptx: add passing parameter to kernel functions	2011-02-10 12:01:24 +00:00
SPARC	Pass sret arguments through the stack instead of through registers in Sparc backend. It makes the code generated more compliant with the sparc32 ABI.	2011-01-22 13:05:16 +00:00
SystemZ	If dbg_declare() or dbg_value() is not lowered by isel then emit DEBUG message instead of creating DBG_VALUE for undefined value in reg0.	2010-12-06 22:39:26 +00:00
Thumb	Sorry, several patches in one.	2011-01-20 08:34:58 +00:00
Thumb2	Move a test that ended up in the wrong place.	2011-02-05 04:15:50 +00:00
X86	After 3-addressifying a two-address instruction, update the register maps; add a missing check when considering whether it's profitable to commute. rdar://8977508.	2011-02-10 02:20:55 +00:00
XCore	Add intrinsic for setc instruction on the XCore.	2011-02-09 13:22:12 +00:00