Benjamin Kramer
7fa30b8e5d
stpcpy is so similar to strcpy, it doesn't deserve a complete copy of the __strcpy_chk -> strcpy code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98284 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 20:45:13 +00:00
Eric Christopher
19888ca8b4
Lower stpcpy_chk when possible.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98274 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 19:24:34 +00:00
Eric Christopher
bd97376200
Add strncpy libcall creator. Use it when it should be used.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98219 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 01:25:07 +00:00
Evan Cheng
687fed3530
Re-commit 97860 with fix. getMallocAllocatedType may return null.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 22:54:36 +00:00
Eric Christopher
7b323a34fa
Let the fallthrough handle whether or not we've changed anything
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before we try to optimize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97876 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 10:59:25 +00:00
Eric Christopher
27ceaa13f8
Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub
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out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 10:50:38 +00:00
Eric Christopher
75f0d6953a
Temporarily revert:
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Log:
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.
Modified:
llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
llvm/trunk/test/Transforms/InstCombine/objsize.ll
It appears to be causing swb and nightly test failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 03:11:35 +00:00
Evan Cheng
fc8ccfedbb
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97860 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 01:01:42 +00:00
Evan Cheng
a862326bc7
Instcombine should turn llvm.objectsize of a alloca with static size to an integer.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 20:47:23 +00:00
Evan Cheng
f79d6246e6
Add missing break for Intrinsic::objectsize case. It was falling through to the following Intrinsic::bswap code. I have no idea why it wasn't breaking stuff.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97774 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 01:22:47 +00:00
Evan Cheng
6e5dfd4bf5
Instcombine constant folding can normalize gep with negative index to index with large offset. When instcombine objsize checking transformation sees these geps where the offset seemingly point out of bound, it should just return "i don't know" rather than asserting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96825 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22 23:34:00 +00:00
Duncan Sands
1df9859c40
There are two ways of checking for a given type, for example isa<PointerType>(T)
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and T->isPointerTy(). Convert most instances of the first form to the second form.
Requested by Chris.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96344 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16 11:11:14 +00:00
Duncan Sands
b0bc6c361d
Uniformize the names of type predicates: rather than having isFloatTy and
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isInteger, we now have isFloatTy and isIntegerTy. Requested by Chris!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96223 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15 16:12:20 +00:00
Eric Christopher
77ffe3b31e
Fix a problem where we had bitcasted operands that gave us
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odd offsets since the bitcasted pointer size and the offset pointer
size are going to be different types for the GEP vs base object.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96134 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13 23:38:01 +00:00
Eric Christopher
dfdddd8ed6
Make sure that ConstantExpr offsets also aren't off of extern
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symbols.
Thanks to Duncan Sands for the testcase!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95877 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11 17:44:04 +00:00
Eric Christopher
26d0e892e3
Add ConstantExpr handling to Intrinsic::objectsize lowering.
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Update testcase accordingly now that we can optimize another
section.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95846 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11 01:48:54 +00:00
Eric Christopher
415326b4ed
Move Intrinsic::objectsize lowering back to InstCombineCalls and
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enable constant 0 offset lowering.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09 21:24:27 +00:00
Eric Christopher
724bea90b0
Remove this code for now. I have a better idea and will rewrite with
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that in mind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95402 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05 19:04:06 +00:00
Eric Christopher
e7b97471f8
Temporarily revert this since it appears to have caused a build
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failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95294 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04 06:41:27 +00:00
Eric Christopher
ea4b6dfd8f
Rework constant expr and array handling for objectsize instcombining.
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Fix bugs where we would compute out of bounds as in bounds, and where
we couldn't know that the linker could override the size of an array.
Add a few new testcases, change existing testcase to use a private
global array instead of extern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95283 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04 02:55:34 +00:00
Eric Christopher
ec5ef6d8b0
If we're dealing with a zero-length array, don't lower to any
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particular size, we just don't know what the length is yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95266 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03 23:56:07 +00:00
Eric Christopher
0c6a8f9eda
Recommit this, looks like it wasn't the cause.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95165 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03 00:21:58 +00:00
Eric Christopher
9f34dd305b
Hopefully temporarily revert this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95154 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 23:01:31 +00:00
Eric Christopher
8334f068c4
Reformat my last patch slightly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95147 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 22:29:26 +00:00
Eric Christopher
a6a089cd24
Re-add strcmp and known size object size checking optimization.
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Passed bootstrap and nightly test run here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95145 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02 22:10:43 +00:00
Chris Lattner
d569561835
fix rdar://7590304, a miscompilation of objc apps on arm. The caller
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of objc message send was getting marked arm_apcscc, but the prototype
isn't. This is fine at runtime because objcmsgsend is implemented in
assembly. Only turn a mismatched caller and callee into 'unreachable'
if the callee is a definition.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94986 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01 18:11:34 +00:00
Chris Lattner
830f3f205d
fix rdar://7590304, an infinite loop in instcombine. In the invoke
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case, instcombine can't zap the invoke for fear of changing the CFG.
However, we have to do something to prevent the next iteration of
instcombine from inserting another store -> undef before the invoke
thereby getting into infinite iteration between dead store elim and
store insertion.
Just zap the callee to null, which will prevent the next iteration
from doing anything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94985 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-01 18:04:58 +00:00
Eric Christopher
36664bfc7a
Revert my last couple of patches. They appear to have broken bison.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29 21:16:24 +00:00
Eric Christopher
949124ce0f
Add constant support to object size handling and remove default
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lowering. We'll either figure it out, or not and be lowered by
SelectionDAGBuild.
Add test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94775 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-29 01:09:57 +00:00
Eric Christopher
4d1f58861d
Remove unnecessary dyn_cast and add a comment. Part of a WIP.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93026 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-08 21:37:11 +00:00
Eric Christopher
130063207d
Move the object size intrinsic optimization to inst-combine and make
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it work for any integer size return type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92853 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-06 20:04:44 +00:00
Benjamin Kramer
8c65f6e71c
Move remaining stuff to the isInteger predicate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92771 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 21:05:54 +00:00
Chris Lattner
753a2b464d
split call handling out to InstCombineCalls.cpp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05 07:32:13 +00:00