Wojciech Matyjewicz e3320a1bcc Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an ... arbitrary iteration. The patch: 1) changes SCEVSDivExpr into SCEVUDivExpr, 2) replaces PartialFact() function with BinomialCoefficient(); the computations (essentially, the division) in BinomialCoefficient() are performed with the apprioprate bitwidth necessary to avoid overflow; unsigned division is used instead of the signed one. Computations in BinomialCoefficient() require support from the code generator for APInts. Currently, we use a hack rounding up the neccessary bitwidth to the nearest power of 2. The hack is easy to turn off in future. One remaining issue: we assume the divisor of the binomial coefficient formula can be computed accurately using 16 bits. It means we can handle AddRecs of length up to 9. In future, we should use APInts to evaluate the divisor. Thanks to Nicholas for cooperation! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46955 91177308-0d34-0410-b5e6-96231b3b80d8		2008-02-11 11:03:14 +00:00
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Analysis	Fix PR1798 - an error in the evaluation of SCEVAddRecExpr at an	2008-02-11 11:03:14 +00:00
Archive
Assembler	Two occurrences on one line count as one...	2008-01-11 21:46:24 +00:00
Bindings/Ocaml	Fixing a bug creating floating point constants of type other	2008-02-02 01:07:50 +00:00
Bitcode	Bring back int_x86_sse2_movl_dq intrinsic for backward compatibility. Make sure	2007-12-17 22:33:23 +00:00
BugPoint
C++Frontend	This should also work on x86 now.	2008-02-05 00:25:31 +00:00
CFrontend	Pointers change size depending upon the target. Remove them to make the test more stable.	2008-01-30 05:15:15 +00:00
CodeGen	Determine whether a spill kills the register it's spilling before insertion rather than trying to undo the kill marker afterwards.	2008-02-11 08:30:52 +00:00
DebugInfo	Accept getelementptr starting at GV with all 0 indices as a	2008-01-30 19:00:21 +00:00
ExecutionEngine	Teach the interpreter to read and write memory in the	2007-12-14 19:38:31 +00:00
Feature
FrontendAda	Testcase for gimplify_expr crash caused by an	2008-01-15 19:55:41 +00:00
FrontendObjC	Rename these tests to use the appropriate suffixes.	2007-12-11 15:55:52 +00:00
Integer
lib
Linker
Other
Scripts
TableGen	Rename MRegisterInfo to TargetRegisterInfo.	2008-02-10 18:45:23 +00:00
Transforms	Fix PR 1995.	2008-02-08 22:49:13 +00:00
Verifier	update this test to pass with duncan's change.	2008-01-22 05:31:58 +00:00
Makefile	remove attributions from the rest of the llvm makefiles.	2007-12-29 20:11:13 +00:00
Makefile.tests
TestRunner.sh