Dan Gohman
2276a7bc8e
Teach instcombine's visitLoad to scan back several instructions
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to find opportunities for store-to-load forwarding or load CSE,
in the same way that visitStore scans back to do DSE. Also, define
a new helper function for testing whether the addresses of two
memory accesses are known to have the same value, and use it in
both visitStore and visitLoad.
These two changes allow instcombine to eliminate loads in code
produced by front-ends that frequently emit obviously redundant
addressing for memory references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57608 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-15 23:19:35 +00:00
Tanya Lattner
6f729d601c
Byebye llvm-upgrade!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48762 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-25 04:26:08 +00:00
Dale Johannesen
c2ec2baf3d
Change all floating constants that are not exactly
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representable to use hex format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41722 91177308-0d34-0410-b5e6-96231b3b80d8
2007-09-05 17:50:36 +00:00
Chris Lattner
ce7c40cf4b
oops, forgot to commit this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41034 91177308-0d34-0410-b5e6-96231b3b80d8
2007-08-12 16:55:14 +00:00
Reid Spencer
2b544beda3
For PR1319:
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Upgrade tests to work with new llvm.exp version of llvm_runtest.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36013 91177308-0d34-0410-b5e6-96231b3b80d8
2007-04-14 20:13:02 +00:00
Reid Spencer
69ccadd753
Use the llvm-upgrade program to upgrade llvm assembly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-12-02 04:23:10 +00:00
Reid Spencer
e5d4efa63e
Promote GEP ubyte indices to uint. Backwards compatibility for 1.2 and
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older features will be dropped soon and these test cases must not rely
on the upgrade capability.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31896 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-23 15:14:52 +00:00
Chris Lattner
2c884fdaa3
remove a testcase for a marginal feature
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31345 91177308-0d34-0410-b5e6-96231b3b80d8
2006-11-01 07:15:44 +00:00
Chris Lattner
15cc608a8f
new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23323 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-12 23:22:17 +00:00
Chris Lattner
128a0032a2
new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23321 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-12 22:19:46 +00:00
Chris Lattner
598fbf756f
new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23319 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-12 21:59:22 +00:00
Chris Lattner
45c2bdd2f9
add a new testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21644 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-01 04:24:15 +00:00
Chris Lattner
b4f5c68e5a
Add two new testcases that instcombine should handle
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16403 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-19 18:43:01 +00:00
Chris Lattner
8152f5f41d
Add back a test I accidentally removed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13835 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-27 17:43:33 +00:00
Chris Lattner
3ba3097516
Add another testcase
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13833 91177308-0d34-0410-b5e6-96231b3b80d8
2004-05-27 17:28:55 +00:00
Misha Brukman
e78760e179
Renamed as' => llvm-as', dis' => llvm-dis', link' => llvm-link'.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8558 91177308-0d34-0410-b5e6-96231b3b80d8
2003-09-16 15:29:54 +00:00
Chris Lattner
060c1f816c
Remove usage of grep-not script
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6966 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-28 23:32:04 +00:00
Chris Lattner
c6cab24151
Convert scripts from using explicit control flow to use the new grep-not script
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6955 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-28 22:44:42 +00:00
Chris Lattner
b75e1e79d7
add tests for elimination of loads
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6911 91177308-0d34-0410-b5e6-96231b3b80d8
2003-06-26 05:05:51 +00:00
