Chris Lattner 4468c22458 Implement an item from the readme, folding vcmp/vcmp. instructions with ... identical instructions into a single instruction. For example, for: void test(vector float *x, vector float *y, int *P) { int v = vec_any_out(*x, *y); *x = (vector float)vec_cmpb(*x, *y); *P = v; } we now generate: _test: mfspr r2, 256 oris r6, r2, 49152 mtspr 256, r6 lvx v0, 0, r4 lvx v1, 0, r3 vcmpbfp. v0, v1, v0 mfcr r4, 2 stvx v0, 0, r3 rlwinm r3, r4, 27, 31, 31 xori r3, r3, 1 stw r3, 0(r5) mtspr 256, r2 blr instead of: _test: mfspr r2, 256 oris r6, r2, 57344 mtspr 256, r6 lvx v0, 0, r4 lvx v1, 0, r3 vcmpbfp. v2, v1, v0 mfcr r4, 2 *** vcmpbfp v0, v1, v0 rlwinm r4, r4, 27, 31, 31 stvx v0, 0, r3 xori r3, r4, 1 stw r3, 0(r5) mtspr 256, r2 blr Testcase here: CodeGen/PowerPC/vcmp-fold.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27290 91177308-0d34-0410-b5e6-96231b3b80d8		2006-03-31 06:02:07 +00:00
..
Analysis	If adding a link to a collapsed, node, ignore offset.	2006-03-27 23:39:58 +00:00
Archive	more C++ daintiness	2005-12-26 14:31:26 +00:00
AsmParser	Add new generated files.	2006-03-23 23:48:12 +00:00
Bytecode	Handle the removal of the debug chain.	2006-03-13 13:07:37 +00:00
CodeGen	Make sure to pass enough values to phi nodes when we are dealing with	2006-03-31 02:12:18 +00:00
Debugger	Handle new forms of llvm.dbg intrinsics.	2006-03-23 18:06:46 +00:00
ExecutionEngine	Get JIT/Interpreter working on Windows again.	2006-03-24 02:53:49 +00:00
Linker	Rename method	2006-01-24 04:14:29 +00:00
Support	Qualify dwarf namespace inside llvm namespace.	2006-02-27 22:37:23 +00:00
System	Convert llvm.cs.uiuc.edu -> llvm.org	2006-03-14 05:54:52 +00:00
Target	Implement an item from the readme, folding vcmp/vcmp. instructions with	2006-03-31 06:02:07 +00:00
Transforms	Fix Transforms/InstCombine/2006-03-30-ExtractElement.ll	2006-03-30 22:02:40 +00:00
VMCore	Add a new method to verify intrinsic function prototypes.	2006-03-31 04:46:47 +00:00
Makefile	Add the Linker library	2004-11-14 21:54:41 +00:00