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llvm-project/llvm/test/Transforms/GVN/2007-07-26-InterlockingLoop...

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Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
@last = external global [65 x i32*]
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
Fix PR17952. The symptom is that an assertion is triggered. The assertion was added by me to detect the situation when value is propagated from dead blocks. (We can certainly get rid of assertion; it is safe to do so, because propagating value from dead block to alive join node is certainly ok.) The root cause of this bug is : edge-splitting is conducted on the fly, the edge being split could be a dead edge, therefore the block that split the critial edge needs to be flagged "dead" as well. There are 3 ways to fix this bug: 1) Get rid of the assertion as I mentioned eariler 2) When an dead edge is split, flag the inserted block "dead". 3) proactively split the critical edges connecting dead and live blocks when new dead blocks are revealed. This fix go for 3) with additional 2 LOC. Testing case was added by Rafael the other day. llvm-svn: 194424
2013-11-12 06:00:23 +08:00
define i32 @NextRootMove(i32 %wtm, i32 %x, i32 %y, i32 %z) {
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
entry:
remove a trivial test, make some other tests less trivial. llvm-svn: 131846
2011-05-22 15:02:43 +08:00
%A = alloca i32*
[opaque pointer type] Add textual IR support for explicit type parameter to 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
2015-02-28 05:17:42 +08:00
%tmp17618 = load i32*, i32** getelementptr ([65 x i32*]* @last, i32 0, i32 1), align 4
remove a trivial test, make some other tests less trivial. llvm-svn: 131846
2011-05-22 15:02:43 +08:00
store i32* %tmp17618, i32** %A
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
; CHECK: entry:
remove a trivial test, make some other tests less trivial. llvm-svn: 131846
2011-05-22 15:02:43 +08:00
; CHECK-NEXT: alloca i32
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
; CHECK-NEXT: %tmp17618 = load
; CHECK-NOT: load
; CHECK-NOT: phi
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
br label %cond_true116
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
cond_true116:
Fix PR17952. The symptom is that an assertion is triggered. The assertion was added by me to detect the situation when value is propagated from dead blocks. (We can certainly get rid of assertion; it is safe to do so, because propagating value from dead block to alive join node is certainly ok.) The root cause of this bug is : edge-splitting is conducted on the fly, the edge being split could be a dead edge, therefore the block that split the critial edge needs to be flagged "dead" as well. There are 3 ways to fix this bug: 1) Get rid of the assertion as I mentioned eariler 2) When an dead edge is split, flag the inserted block "dead". 3) proactively split the critical edges connecting dead and live blocks when new dead blocks are revealed. This fix go for 3) with additional 2 LOC. Testing case was added by Rafael the other day. llvm-svn: 194424
2013-11-12 06:00:23 +08:00
%cmp = icmp eq i32 %x, %y
br i1 %cmp, label %cond_true128, label %cond_true145
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
cond_true128:
[opaque pointer type] Add textual IR support for explicit type parameter to 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
2015-02-28 05:17:42 +08:00
%tmp17625 = load i32*, i32** getelementptr ([65 x i32*]* @last, i32 0, i32 1), align 4
remove a trivial test, make some other tests less trivial. llvm-svn: 131846
2011-05-22 15:02:43 +08:00
store i32* %tmp17625, i32** %A
Fix PR17952. The symptom is that an assertion is triggered. The assertion was added by me to detect the situation when value is propagated from dead blocks. (We can certainly get rid of assertion; it is safe to do so, because propagating value from dead block to alive join node is certainly ok.) The root cause of this bug is : edge-splitting is conducted on the fly, the edge being split could be a dead edge, therefore the block that split the critial edge needs to be flagged "dead" as well. There are 3 ways to fix this bug: 1) Get rid of the assertion as I mentioned eariler 2) When an dead edge is split, flag the inserted block "dead". 3) proactively split the critical edges connecting dead and live blocks when new dead blocks are revealed. This fix go for 3) with additional 2 LOC. Testing case was added by Rafael the other day. llvm-svn: 194424
2013-11-12 06:00:23 +08:00
%cmp1 = icmp eq i32 %x, %z
br i1 %cmp1 , label %bb98.backedge, label %return.loopexit
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
bb98.backedge:
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
br label %cond_true116
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
cond_true145:
[opaque pointer type] Add textual IR support for explicit type parameter to 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
2015-02-28 05:17:42 +08:00
%tmp17631 = load i32*, i32** getelementptr ([65 x i32*]* @last, i32 0, i32 1), align 4
remove a trivial test, make some other tests less trivial. llvm-svn: 131846
2011-05-22 15:02:43 +08:00
store i32* %tmp17631, i32** %A
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
br i1 false, label %bb98.backedge, label %return.loopexit
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
return.loopexit:
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
br label %return
Teach InstructionSimplify about phi nodes. I chose to have it simply offload the work to hasConstantValue rather than do something more complicated (such handling mutually recursive phis) because (1) it is not clear it is worth it; and (2) if it is worth it, maybe such logic would be better placed in hasConstantValue. Adjust some GVN tests which are now cleaned up much further (eg: all phi nodes are removed). llvm-svn: 119043
2010-11-14 21:30:18 +08:00
return:
Fix a couple more bugs in the phi construction by pulling in code that does almost the same things from LCSSA. llvm-svn: 40540
2007-07-27 02:26:51 +08:00
ret i32 0
}