Bill Wendling 8b8a636843 Implement a special algorithm for converting uint_to_fp for i32 values on ... X86. This code: void f() { uint32_t x; float y = (float)x; } used to be: movl %eax, -8(%ebp) movl [2^52 double], -4(%ebp) movsd -8(%ebp), %xmm0 subsd [2^52 double], %xmm0 cvtsd2ss %xmm0, %xmm0 Is now: movsd [2^52 double], %xmm0 movsd %xmm0, %xmm1 movd %ecx, %xmm2 orps %xmm2, %xmm1 subsd %xmm0, %xmm1 cvtsd2ss %xmm1, %xmm0 This is faster on X86. Note that there's an extra load of %xmm0 into %xmm1. That will be fixed in a later coalescer fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62404 91177308-0d34-0410-b5e6-96231b3b80d8		2009-01-17 03:56:04 +00:00
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Analysis	speed up iterative loop by using iterators. changes direction, but functionally equivalent	2009-01-17 00:14:25 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	Add the private linkage.	2009-01-15 20:18:42 +00:00
Bitcode	use specialized accessor instead of plain getOperand(0)	2009-01-16 18:40:27 +00:00
CodeGen	Simplify extract element of a scalar to vector.	2009-01-17 00:07:25 +00:00
Debugger	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
ExecutionEngine	don't assert and die on out of range (undefined) shifts. This fixes	2009-01-16 20:17:02 +00:00
Linker	Add the private linkage.	2009-01-15 20:18:42 +00:00
Support	Support for multi-valued options in CommandLine	2009-01-16 22:54:19 +00:00
System	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Target	Implement a special algorithm for converting uint_to_fp for i32 values on	2009-01-17 03:56:04 +00:00
Transforms	introduce typedef for complicated vector, and use it too	2009-01-17 00:09:08 +00:00
VMCore	Add the private linkage.	2009-01-15 20:18:42 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00