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* Revert "Revert "[FunctionAttrs] Identify norecurse functions""James Molloy2015-11-121-2/+3
| | | | | | This reapplies this patch, with test fixes. llvm-svn: 252871
* Revert "[FunctionAttrs] Identify norecurse functions"James Molloy2015-11-121-3/+2
| | | | | | This reverts commit r252862. This introduced test failures and I'm reverting while I investigate how this happened. llvm-svn: 252863
* [FunctionAttrs] Identify norecurse functionsJames Molloy2015-11-121-2/+3
| | | | | | | | | | | | | A function can be marked as norecurse if: * The SCC to which it belongs has cardinality 1; and either a) It does not call any non-norecurse function. This includes self-recursion; or b) It only has one callsite and the function that callsite is within is marked norecurse. a) is best propagated bottom-up and b) is best propagated top-down. We build up the norecurse attributes bottom-up using the existing SCC pass, and mark functions with no obvious recursion (but not provably norecurse) to sweep later, top-down. llvm-svn: 252862
* [opaque pointer type] Add textual IR support for explicit type parameter to ↵David Blaikie2015-02-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
* Modify the LLVM assembly output so that it uses references to represent ↵Bill Wendling2013-02-201-4/+6
| | | | | | | | | | | function attributes. This makes the LLVM assembly look better. E.g.: define void @foo() #0 { ret void } attributes #0 = { nounwind noinline ssp } llvm-svn: 175605
* FileCheck-ize the tests.Bill Wendling2013-02-111-1/+5
| | | | llvm-svn: 174865
* Make ModRefBehavior a lattice. Use this to clean up AliasAnalysisDan Gohman2010-11-101-1/+1
| | | | | | chaining and simplify FunctionAttrs' GetModRefBehavior logic. llvm-svn: 118660
* Change tests from "opt %s" to "opt < %s" so that opt doesn't see theDan Gohman2009-09-111-1/+1
| | | | | | | | input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. llvm-svn: 81537
* Use opt -S instead of piping bitcode output through llvm-dis.Dan Gohman2009-09-081-1/+1
| | | | llvm-svn: 81257
* Change these tests to feed the assembly files to opt directly, insteadDan Gohman2009-09-081-1/+1
| | | | | | of using llvm-as, now that opt supports this. llvm-svn: 81226
* Rename AddReadAttrs to FunctionAttrs, and teach it howDuncan Sands2008-12-311-0/+18
to work out (in a very simplistic way) which function arguments (pointer arguments only) are only dereferenced and so do not escape. Mark such arguments 'nocapture'. llvm-svn: 61525
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