Benjamin Kramer 9c64030445 Emit a more efficient magic number multiplication for exact sdivs. ... We have to do this in DAGBuilder instead of DAGCombiner, because the exact bit is lost after building. struct foo { char x[24]; }; long bar(struct foo *a, struct foo *b) { return a-b; } is now compiled into movl 4(%esp), %eax subl 8(%esp), %eax sarl $3, %eax imull $-1431655765, %eax, %eax instead of movl 4(%esp), %eax subl 8(%esp), %eax movl $715827883, %ecx imull %ecx movl %edx, %eax shrl $31, %eax sarl $2, %edx addl %eax, %edx movl %edx, %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134695 91177308-0d34-0410-b5e6-96231b3b80d8		2011-07-08 10:31:30 +00:00
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Alpha
ARM	Change some ARM subtarget features to be single bit yes/no in order to sink them down to MC layer. Also fix tests.	2011-07-07 03:55:05 +00:00
Blackfin
CBackend	Add support for sadd.with.overflow and uadd.with.overflow intrinsics to the CBackend by emitting definitions for each intrinsic that occurs in the module.	2011-06-21 17:18:15 +00:00
CellSPU
CPP
Generic	Added a testcase for PR10220.	2011-07-07 00:36:02 +00:00
MBlaze
Mips
MSP430
PowerPC
PTX
SPARC
SystemZ
Thumb	Change some ARM subtarget features to be single bit yes/no in order to sink them down to MC layer. Also fix tests.	2011-07-07 03:55:05 +00:00
Thumb2	Fix more register allocation sensitive tests.	2011-07-08 00:24:06 +00:00
X86	Emit a more efficient magic number multiplication for exact sdivs.	2011-07-08 10:31:30 +00:00
XCore