Benjamin Kramer f238f50aaf X86: Use btq for bit tests if the immediate can't be encoded in 32 bits. ... Before: movabsq $4294967296, %rax ## encoding: [0x48,0xb8,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00] testq %rax, %rdi ## encoding: [0x48,0x85,0xf8] jne LBB0_2 ## encoding: [0x75,A] After: btq $32, %rdi ## encoding: [0x48,0x0f,0xba,0xe7,0x20] jb LBB0_2 ## encoding: [0x72,A] btq is usually slower than testq because it doesn't fuse with the jump, but here we're better off saving one register and a giant movabsq. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145103 91177308-0d34-0410-b5e6-96231b3b80d8		2011-11-23 13:54:17 +00:00
..
ARM
CBackend
CellSPU
CPP
Generic
MBlaze
Mips
MSP430
PowerPC	add basic PPC register-pressure feedback; adjust the vaarg test to match the new register-allocation pattern	2011-11-22 16:21:04 +00:00
PTX
SPARC
Thumb
Thumb2
X86	X86: Use btq for bit tests if the immediate can't be encoded in 32 bits.	2011-11-23 13:54:17 +00:00
XCore