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2004-04-12Corrected the descriptions of the llvm.writeport and llvm.writeioJohn Criswell
intrinsics. Modified llvm.readio and llvm.writeio to use pointers to memory instead of integers. This should take care of problems such as different pointer sizes, casting integers to pointers, weird architectural pointer types, etc. Re-worded the description of llvm.readio and llvm.writeio so that it should be more clear as to why they should be used over regular loads/stores for I/O. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12867 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Print def lists a bit more compactlyAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12866 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Add same value coalescing testcaseAlkis Evlogimenos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12865 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Added initial design for the llvm.readio and llvm.writeio intrinsics.John Criswell
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12864 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Add a couple more IPO'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12863 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12finegrainify namespacificationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12862 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Actually update the call graph as the inliner changes it. This allows us toChris Lattner
execute other CallGraphSCCPasses after the inliner without crashing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12861 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Change the call graph class to have TWO external nodes, making call graphChris Lattner
SCC passes much more useful. In particular, this should fix the incredibly stupid missed inlining opportunities that the inliner suffered from. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12860 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Hrm, operator new and new[] do not belong here. We should not CSE them! :)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12859 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Add support for removing invoke instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12858 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Stop printing Function*Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12857 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Simplify code a bit, and be sure to mark the external node as potentially ↵Chris Lattner
throwing git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12856 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Fix issues that the local allocator has dealing with instructions that ↵Chris Lattner
implicitly use ST(0) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12855 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12No really, fix printing for LLC. I gotta get a way for CVS to whine at me ifChris Lattner
I have unsaved emacs buffers, geeze... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12854 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Correct printing for LLC and the encoding for the JITChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12853 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Use the fucomi[p] instructions to perform floating point comparisons insteadChris Lattner
of the fucom[p][p] instructions. This allows us to code generate this function bool %test(double %X, double %Y) { %C = setlt double %Y, %X ret bool %C } ... into: test: fld QWORD PTR [%ESP + 4] fld QWORD PTR [%ESP + 12] fucomip %ST(1) fstp %ST(0) setb %AL movsx %EAX, %AL ret where before we generated: test: fld QWORD PTR [%ESP + 4] fld QWORD PTR [%ESP + 12] fucompp ** fnstsw ** sahf setb %AL movsx %EAX, %AL ret The two marked instructions (which are the ones eliminated) are very bad, because they serialize execution of the processor. These instructions are available on the PPRO and later, but since we already use cmov's we aren't losing any portability. I retained the old code for the day when we decide we want to support back to the 386. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12852 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Add support for the FUCOMIr instructionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12851 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Add two new instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12850 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Fix a bug in my load/cast folding patch.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12849 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-12Adjust some comments, fix a bug in my previous patchChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12848 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Disambiguate symbols after loop extraction so that we can diagnose a codeChris Lattner
generator bug if multiple loops are extracted from a function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12847 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11On X86, casting an integer to floating point requires going through memory.Chris Lattner
If the source of the cast is a load, we can just use the source memory location, without having to create a temporary stack slot entry. Before we code generated this: double %int(int* %P) { %V = load int* %P %V2 = cast int %V to double ret double %V2 } into: int: sub %ESP, 4 mov %EAX, DWORD PTR [%ESP + 8] mov %EAX, DWORD PTR [%EAX] mov DWORD PTR [%ESP], %EAX fild DWORD PTR [%ESP] add %ESP, 4 ret Now we produce this: int: mov %EAX, DWORD PTR [%ESP + 4] fild DWORD PTR [%EAX] ret ... which is nicer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12846 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11New testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12845 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Implement folding of loads into floating point operations. This implements:Chris Lattner
test/Regression/CodeGen/X86/fp_load_fold.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12844 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11New testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12843 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Unify all of the code for floating point +,-,*,/ into one functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12842 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11This implements folding of constant operands into floating point operationsChris Lattner
for mul and div. Instead of generating this: test_divr: fld QWORD PTR [%ESP + 4] fld QWORD PTR [.CPItest_divr_0] fdivrp %ST(1) ret We now generate this: test_divr: fld QWORD PTR [%ESP + 4] fdivr QWORD PTR [.CPItest_divr_0] ret This code desperately needs refactoring, which will come in the next patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12841 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Restructure the mul/div/rem handling code to follow the pattern the otherChris Lattner
instructions use. This doesn't change any functionality except that long constant expressions of these operations will now magically start working. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12840 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Codegen FP adds and subtracts with a constant more efficiently, generating:Chris Lattner
fld QWORD PTR [%ESP + 4] fadd QWORD PTR [.CPItest_add_0] instead of: fld QWORD PTR [%ESP + 4] fld QWORD PTR [.CPItest_add_0] faddp %ST(1) I also intend to do this for mul & div, but it appears that I have to refactor a bit of code before I can do so. This is tested by: test/Regression/CodeGen/X86/fp_constant_op.llx git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12839 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Add some new instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12838 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11New testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12837 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Relax assertion to make this function work with a broader class of instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12836 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Two changes:Chris Lattner
1. If an incoming argument is dead, don't load it from the stack 2. Do not code gen noop copies at all (ie, cast int -> uint), not even to a move. This should reduce register pressure for allocators that are unable to coallesce away these copies in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12835 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Add another variant of the testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12834 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11operator new & operator new[] do not kill any legal memory locations.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12833 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11new testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12832 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Allow clients to be more efficient.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12831 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Make comments above APIs reflect what they should do.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12830 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11New method to allow more efficient clientsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12829 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Fix a bug in my select transformationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12826 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-11Add a missing break, which caused a crash in an obscure situationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12825 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Update the value numbering interface.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12824 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Note to self: SAVE FILES!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12823 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Add an interface to update value numberingChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12822 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Implement InstCombine/select.ll:test13*Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12821 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10New testcasesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12820 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Implement InstCombine/add.ll:test20Chris Lattner
Canonicalize add of sign bit constant into a xor git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12819 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10New testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12818 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Rewrite the GCSE pass to be *substantially* simpler, a bit more efficient,Chris Lattner
and a bit more powerful git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12817 91177308-0d34-0410-b5e6-96231b3b80d8
2004-04-10Fix spurious warning in release modeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12816 91177308-0d34-0410-b5e6-96231b3b80d8
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