Chris Lattner beac75da37 implement rdar://6653118 - fastisel should fold loads where possible. ... Since mem2reg isn't run at -O0, we get a ton of reloads from the stack, for example, before, this code: int foo(int x, int y, int z) { return x+y+z; } used to compile into: _foo: ## @foo subq $12, %rsp movl %edi, 8(%rsp) movl %esi, 4(%rsp) movl %edx, (%rsp) movl 8(%rsp), %edx movl 4(%rsp), %esi addl %edx, %esi movl (%rsp), %edx addl %esi, %edx movl %edx, %eax addq $12, %rsp ret Now we produce: _foo: ## @foo subq $12, %rsp movl %edi, 8(%rsp) movl %esi, 4(%rsp) movl %edx, (%rsp) movl 8(%rsp), %edx addl 4(%rsp), %edx ## Folded load addl (%rsp), %edx ## Folded load movl %edx, %eax addq $12, %rsp ret Fewer instructions and less register use = faster compiles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113102 91177308-0d34-0410-b5e6-96231b3b80d8		2010-09-05 02:18:34 +00:00
..
Analysis	remove some noise from tests.	2010-09-02 22:35:33 +00:00
Archive
Assembler	add a new "llvm-dis -show-annotations" option, which causes it to print	2010-09-02 23:21:44 +00:00
Bindings/Ocaml	Update ocaml test.	2010-08-28 10:29:41 +00:00
Bitcode	Replace NEON vabdl, vaba, and vabal intrinsics with combinations of the	2010-09-03 01:35:08 +00:00
BugPoint	XFAIL this on mingw, following remove_arguments_test.ll.	2010-08-24 20:54:50 +00:00
CodeGen	implement rdar://6653118 - fastisel should fold loads where possible.	2010-09-05 02:18:34 +00:00
DebugInfo	Convert DbgInfoPrinter to use errs() instead of outs().	2010-08-20 18:03:05 +00:00
ExecutionEngine
Feature	remove unions from LLVM IR. They are severely buggy and not	2010-08-28 04:09:24 +00:00
FrontendAda
FrontendC	update one more test	2010-09-02 23:32:55 +00:00
FrontendC++	Reapply r112623. Included additional check for unused byval argument.	2010-08-31 22:22:42 +00:00
FrontendFortran
FrontendObjC
FrontendObjC++	Test case for r110459. Radar 8264751. Test case by Fariborz Jahanian!	2010-08-06 19:02:24 +00:00
Integer	we are past the point where these tests are useful.	2010-09-02 22:32:02 +00:00
lib
Linker	Reapply r112091 and r111922, support for metadata linking, with a	2010-08-26 15:41:53 +00:00
LLVMC	Test: Fix LLVMC tests on CMake.	2010-08-30 14:49:00 +00:00
MC	Add AsmParser support for the ELF .previous directive. Patch by Roman Divacky.	2010-09-02 18:53:37 +00:00
Other	remove unions from LLVM IR. They are severely buggy and not	2010-08-28 04:09:24 +00:00
Scripts	coff-dump.py: Fix PR7996. Now it is compatible to Python-2.4.	2010-08-30 15:19:56 +00:00
TableGen	Generalize getFieldType to work on all TypedInits. Add a couple of testcases from	2010-09-03 21:00:49 +00:00
Transforms	Fix LoopSimplify to notify ScalarEvolution when splitting a loop backedge	2010-09-04 02:42:48 +00:00
Unit
Verifier	Reject unrepresentable pointer types in intrinsics. Fixes PR7316.	2010-08-08 06:12:09 +00:00
CMakeLists.txt	Test: Fix LLVMC tests on CMake.	2010-08-30 14:49:00 +00:00
lit.cfg	Test: Fix LLVMC tests on CMake.	2010-08-30 14:49:00 +00:00
lit.site.cfg.in
Makefile	Partially revert r112480. Caused test failures.	2010-08-30 15:34:08 +00:00
Makefile.tests
site.exp.in
TestRunner.sh	Use exec.	2010-08-29 14:49:00 +00:00