Evan Cheng 0b0cd9113a Optimize some 64-bit multiplication by constants into two lea's or one lea + shl since imulq is slow (latency 5). e.g. ... x * 40 => shlq $3, %rdi leaq (%rdi,%rdi,4), %rax This has the added benefit of allowing more multiply to be folded into addressing mode. e.g. a * 24 + b => leaq (%rdi,%rdi,2), %rax leaq (%rsi,%rax,8), %rax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67917 91177308-0d34-0410-b5e6-96231b3b80d8		2009-03-28 05:57:29 +00:00
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Alpha
ARM	Do not emit comments unless -asm-verbose.	2009-03-24 00:17:40 +00:00
CBackend
CellSPU	Revert 67132. This is breaking some objective-c apps.	2009-03-25 20:20:11 +00:00
CPP
Generic	LSR shouldn't ever try to hack on integer IV's larger than 64-bits. Right now	2009-03-17 23:58:30 +00:00
IA64
Mips
PowerPC	Fix this test so that it doesn't spuriously fail due to some	2009-03-27 16:17:22 +00:00
SPARC
X86	Optimize some 64-bit multiplication by constants into two lea's or one lea + shl since imulq is slow (latency 5). e.g.	2009-03-28 05:57:29 +00:00
XCore