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Sanjay Patel 629c411538 [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 
As discussed on llvm-dev:
http://lists.llvm.org/pipermail/llvm-dev/2016-November/107104.html
and again more recently:
http://lists.llvm.org/pipermail/llvm-dev/2017-October/118118.html

...this is a step in cleaning up our fast-math-flags implementation in IR to better match
the capabilities of both clang's user-visible flags and the backend's flags for SDNode.

As proposed in the above threads, we're replacing the 'UnsafeAlgebra' bit (which had the 
'umbrella' meaning that all flags are set) with a new bit that only applies to algebraic 
reassociation - 'AllowReassoc'.

We're also adding a bit to allow approximations for library functions called 'ApproxFunc' 
(this was initially proposed as 'libm' or similar).

...and we're out of bits. 7 bits ought to be enough for anyone, right? :) FWIW, I did 
look at getting this out of SubclassOptionalData via SubclassData (spacious 16-bits), 
but that's apparently already used for other purposes. Also, I don't think we can just 
add a field to FPMathOperator because Operator is not intended to be instantiated. 
We'll defer movement of FMF to another day.

We keep the 'fast' keyword. I thought about removing that, but seeing IR like this:
%f.fast = fadd reassoc nnan ninf nsz arcp contract afn float %op1, %op2
...made me think we want to keep the shortcut synonym.

Finally, this change is binary incompatible with existing IR as seen in the 
compatibility tests. This statement:
"Newer releases can ignore features from older releases, but they cannot miscompile 
them. For example, if nsw is ever replaced with something else, dropping it would be 
a valid way to upgrade the IR." 
( http://llvm.org/docs/DeveloperPolicy.html#ir-backwards-compatibility )
...provides the flexibility we want to make this change without requiring a new IR 
version. Ie, we're not loosening the FP strictness of existing IR. At worst, we will 
fail to optimize some previously 'fast' code because it's no longer recognized as 
'fast'. This should get fixed as we audit/squash all of the uses of 'isFast()'.

Note: an inter-dependent clang commit to use the new API name should closely follow 
commit.

Differential Revision: https://reviews.llvm.org/D39304

llvm-svn: 317488
 		2017-11-06 16:27:15 +00:00
..
Inputs Do not want to use BFI to get profile count for sample pgo 2017-08-03 17:11:41 +00:00
2006-12-11-Cast-ConstExpr.ll
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2009-06-11-FirstClassAggregateConstant.ll
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DICompileUnit-no-DWOId.ll DI: Disallow uniquable DICompileUnits 2015-08-03 17:26:41 +00:00
DICompileUnit-no-DWOId.ll.bc IR / debug info: Add a DWOId field to DICompileUnit, 2015-05-21 20:37:30 +00:00
DIExpression-4.0.ll Fix a bug in a historic bitcode testcase. NFC. 2017-09-21 23:14:52 +00:00
DIExpression-4.0.ll.bc Fix a bug in a historic bitcode testcase. NFC. 2017-09-21 23:14:52 +00:00
DIExpression-aggresult.ll Parse and print DIExpressions inline to ease IR and MIR testing 2017-08-23 20:31:27 +00:00
DIExpression-aggresult.ll.bc PR32382: Fix emitting complex DWARF expressions. 2017-04-18 01:21:53 +00:00
DIExpression-deref.ll Fix a bug in a historic bitcode testcase. 2017-09-21 23:14:55 +00:00
DIExpression-deref.ll.bc Fix a bug in a historic bitcode testcase. 2017-09-21 23:14:55 +00:00
DIExpression-minus-upgrade.ll Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DIExpression-minus-upgrade.ll.bc Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DIGlobalVariableExpression.ll Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
DIGlobalVariableExpression.ll.bc Fix the bitcode upgrade for DIGlobalVariable in a DIImportedEntity context. 2017-02-07 17:35:41 +00:00
DIGlobalVariableExpression2.ll Canonicalize the representation of empty an expression in DIGlobalVariableExpression 2017-08-30 18:06:51 +00:00
DIGlobalVariableExpression2.ll.bc Fix bitcode upgrade for DIGlobalVariables with a var: field. 2017-02-08 17:44:43 +00:00
DILocalVariable-explicit-tags.ll [Bitcode] Fix + regenerate old test so that it includes a DICompileUnit. 2016-04-12 15:51:23 +00:00
DILocalVariable-explicit-tags.ll.bc [Bitcode] Fix + regenerate old test so that it includes a DICompileUnit. 2016-04-12 15:51:23 +00:00
DINamespace.ll Remove line and file from DINamespace. 2017-04-28 22:25:46 +00:00
DINamespace.ll.bc Add DWARF debug info support for C++11 inline namespaces. 2016-11-03 19:42:02 +00:00
DISubprogram-distinct-definitions.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
DISubprogram-distinct-definitions.ll.bc [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
PR23310.test Fix for PR23310: llvm-dis crashes when trying to upgrade an intrinsic. 2015-07-02 16:22:40 +00:00
aggregateInstructions.3.2.ll
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aggregateInstructions.3.2.ll.bc
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anon-functions.ll Fix PR25101 - Handle anonymous functions without VST entries 2015-10-10 14:18:36 +00:00
arm32_neon_vcnt_upgrade.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
atomic-no-syncscope.ll Enhance synchscope representation 2017-07-11 22:23:00 +00:00
atomic-no-syncscope.ll.bc Enhance synchscope representation 2017-07-11 22:23:00 +00:00
atomic.ll Enhance synchscope representation 2017-07-11 22:23:00 +00:00
attributes-3.3.ll
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attributes-3.3.ll.bc
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attributes.ll Add speculatable function attribute 2017-04-28 20:25:27 +00:00
auto_upgrade_intrinsics.bc Upgrade TBAA *before* upgrading intrinsics 2016-03-16 23:17:54 +00:00
avr-calling-conventions.ll [AVR] Add calling convention parser tokens 2016-03-03 10:08:02 +00:00
avr-calling-conventions.ll.bc [AVR] Add calling convention parser tokens 2016-03-03 10:08:02 +00:00
binaryFloatInstructions.3.2.ll
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binaryFloatInstructions.3.2.ll.bc
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binaryIntInstructions.3.2.ll
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binaryIntInstructions.3.2.ll.bc
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bitcode-wrapper-header-armv7m.ll [llvm-bcanalyzer] Dump bitcode wrapper header 2016-01-29 05:55:09 +00:00
bitcode-wrapper-header-x86_64.ll [llvm-bcanalyzer] Dump bitcode wrapper header 2016-01-29 05:55:09 +00:00
bitwiseInstructions.3.2.ll
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bitwiseInstructions.3.2.ll.bc
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blockaddress.ll
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calling-conventions.3.2.ll
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calling-conventions.3.2.ll.bc
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case-ranges-3.3.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
case-ranges-3.3.ll.bc
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cmpxchg-upgrade.ll
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cmpxchg-upgrade.ll.bc
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cmpxchg.3.6.ll [opaque pointer type] Encode the pointee type in the bitcode for 'cmpxchg' 2015-04-28 04:30:29 +00:00
cmpxchg.3.6.ll.bc [opaque pointer type] Encode the pointee type in the bitcode for 'cmpxchg' 2015-04-28 04:30:29 +00:00
compatibility-3.6.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-3.6.ll.bc [IR] Limit bits used for CallingConv::ID, update tests 2015-10-27 21:17:06 +00:00
compatibility-3.7.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-3.7.ll.bc [IR] Limit bits used for CallingConv::ID, update tests 2015-10-27 21:17:06 +00:00
compatibility-3.8.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-3.8.ll.bc [Bitcode] Add compatibility test for the 3.8 release 2016-03-16 05:43:03 +00:00
compatibility-3.9.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-3.9.ll.bc [Bitcode] Add compatibility test for the 3.9 release 2016-09-09 17:24:31 +00:00
compatibility-4.0.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-4.0.ll.bc [Bitcode] Add compatibility test for the 4.0 release 2017-03-17 17:53:26 +00:00
compatibility-5.0.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
compatibility-5.0.ll.bc [Bitcode] Add a compatibility test for 5.0.0 bitcode 2017-09-13 21:40:59 +00:00
compatibility.ll [IR] redefine 'UnsafeAlgebra' / 'reassoc' fast-math-flags and add 'trans' fast-math-flag 2017-11-06 16:27:15 +00:00
constantsTest.3.2.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
constantsTest.3.2.ll.bc
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conversionInstructions.3.2.ll
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conversionInstructions.3.2.ll.bc
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debug-loc-again.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
dicompileunit-gnu-pubnames.ll IR: Represent -ggnu-pubnames with a flag on the DICompileUnit. 2017-09-12 21:50:41 +00:00
diglobalvariable-3.8.ll Parse and print DIExpressions inline to ease IR and MIR testing 2017-08-23 20:31:27 +00:00
diglobalvariable-3.8.ll.bc [IR] Remove the DIExpression field from DIGlobalVariable. 2016-12-20 02:09:43 +00:00
dilocalvariable-3.9.ll DebugInfo: add bitcode upgrade test for alignment 2016-10-26 08:34:19 +00:00
dilocalvariable-3.9.ll.bc DebugInfo: add bitcode upgrade test for alignment 2016-10-26 08:34:19 +00:00
dityperefs-3.8.ll Fix the bitcode upgrade for DIGlobalVariable in a DIImportedEntity context. 2017-02-07 17:35:41 +00:00
dityperefs-3.8.ll.bc BitcodeReader: Fix some holes in upgrade from r267296 2016-04-24 06:52:01 +00:00
drop-debug-info.3.5.ll llvm-dis: Stop crashing when dropping debug info 2015-02-25 01:10:03 +00:00
drop-debug-info.3.5.ll.bc llvm-dis: Stop crashing when dropping debug info 2015-02-25 01:10:03 +00:00
dso_location.ll Represent runtime preemption in the IR. 2017-10-26 15:00:26 +00:00
extractelement.ll
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fcmp-fast.ll Add support for fast-math flags to the FCmp instruction. 2015-07-10 12:52:00 +00:00
flags.ll
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function-encoding-rel-operands.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
function-local-metadata.3.5.ll
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function-local-metadata.3.5.ll.bc
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global-variables.3.2.ll
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global-variables.3.2.ll.bc
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globalvariable-attributes.ll [IR] Allow attributes with global variables 2017-05-11 12:28:08 +00:00
highLevelStructure.3.2.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
highLevelStructure.3.2.ll.bc
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identification.ll Add an (optional) identification block in the bitcode 2015-10-26 18:37:00 +00:00
inalloca.ll
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invalid-weak-external.ll Object: Downgrade invalid weak externals from an assert fail to an llvm::Error when creating an irsymtab. 2017-09-07 01:33:52 +00:00
invalid.ll Add writeonly IR attribute 2016-07-04 08:01:29 +00:00
invalid.ll.bc Add writeonly IR attribute 2016-07-04 08:01:29 +00:00
invalid.test Bitcode: Introduce initial multi-module reader API. 2016-11-16 21:44:45 +00:00
linkage-types-3.2.ll
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linkage-types-3.2.ll.bc
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local-linkage-default-visibility.3.4.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
local-linkage-default-visibility.3.4.ll.bc
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mdnodes-distinct-in-post-order.ll Add an index for Module Metadata record in the bitcode 2016-12-28 22:30:28 +00:00
mdnodes-distinct-nodes-break-cycles.ll Add an index for Module Metadata record in the bitcode 2016-12-28 22:30:28 +00:00
mdnodes-distinct-nodes-first.ll Add an index for Module Metadata record in the bitcode 2016-12-28 22:30:28 +00:00
mdnodes-in-post-order.ll Add an index for Module Metadata record in the bitcode 2016-12-28 22:30:28 +00:00
mdstring-high-bits.ll
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memInstructions.3.2.ll Enhance synchscope representation 2017-07-11 22:23:00 +00:00
memInstructions.3.2.ll.bc
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metadata-2.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
metadata-function-blocks.ll Add an index for Module Metadata record in the bitcode 2016-12-28 22:30:28 +00:00
metadata-only-empty-string.ll BitcodeReader: Allow METADATA_STRINGS to only have !"" 2016-03-29 05:25:17 +00:00
metadata-strings.ll Reapply ~"Bitcode: Collect all MDString records into a single blob" 2016-03-27 23:17:54 +00:00
metadata.3.5.ll
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metadata.3.5.ll.bc
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metadata.ll
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miscInstructions.3.2.ll Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
miscInstructions.3.2.ll.bc
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module-hash-strtab.ll Bitcode: Include any strings added to the string table in the module hash. 2017-07-06 17:56:01 +00:00
module_hash.ll Bitcode: Include any strings added to the string table in the module hash. 2017-07-06 17:56:01 +00:00
multi-module.ll Bitcode: Add a more comprehensive multi-module test now that we have both llvm-cat and llvm-modextract. 2016-11-29 21:55:09 +00:00
null-type.ll Bitcode: Introduce initial multi-module reader API. 2016-11-16 21:44:45 +00:00
null-type.ll.bc
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old-aliases.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
old-aliases.ll.bc
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operand-bundles-bc-analyzer.ll Symbolize operand bundle blocks for bcanalyzer 2016-04-26 05:59:08 +00:00
operand-bundles.ll [Bitcode][Asm] Teach LLVM to read and write operand bundles. 2015-09-24 23:34:52 +00:00
padding.test Improve handling of end of file in the bitcode reader. 2015-06-16 20:03:39 +00:00
pr18704.ll llvm-dis: Stop crashing when dropping debug info 2015-02-25 01:10:03 +00:00
pr18704.ll.bc
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ptest-new.ll
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ptest-old.ll [X86] Replace 'REQUIRES: x86' in tests with 'REQUIRES: x86-registered-target' which seems to be the correct way to make them run on an x86 build. 2017-06-04 08:21:58 +00:00
select.ll [BitcodeReader] Ensure we can read constant vector selects with an i1 condition 2015-08-31 18:00:30 +00:00
shuffle.ll
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source-filename.test Restore "[ThinLTO] Use MD5 hash in function index." with fix 2016-02-10 21:55:02 +00:00
ssse3_palignr.ll
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standardCIntrinsic.3.2.ll Revert "Change memcpy/memset/memmove to have dest and source alignments." 2015-11-19 05:56:52 +00:00
standardCIntrinsic.3.2.ll.bc
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summary_version.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
tailcall.ll [IR] Limit bits used for CallingConv::ID, update tests 2015-10-27 21:17:06 +00:00
terminatorInstructions.3.2.ll
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terminatorInstructions.3.2.ll.bc
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thinlto-alias.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-alias2.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-asm-noimport.ll ModuleSummaryAnalysis: Correctly handle refs from function inline asm to module inline asm. 2017-09-01 16:24:02 +00:00
thinlto-empty-summary-section.ll [ThinLTO] Always emit a summary when compiling in ThinLTO mode 2016-09-20 23:07:17 +00:00
thinlto-function-summary-callgraph-pgo.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary-callgraph-profile-summary.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary-callgraph-sample-profile-summary.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary-callgraph.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary-functionattrs.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary-originalnames.ll Bitcode: Add a string table to the bitcode format. 2017-04-17 17:51:36 +00:00
thinlto-function-summary-refgraph.ll [ThinLTO] Add FunctionAttrs to ThinLTO index 2017-08-04 16:00:58 +00:00
thinlto-function-summary.ll Bitcode: Write the irsymtab to disk. 2017-06-27 23:50:11 +00:00
thinlto-summary-globalvar.ll [PM] Port ModuleSummaryIndex analysis to new pass manager 2016-08-12 13:53:02 +00:00
thinlto-summary-linkage-types.ll [ThinLTO] Use valueid instead of bitcode offsets in combined index file 2016-04-27 13:28:35 +00:00
thinlto-summary-local-5.0.ll [LTO][ThinLTO] Use the linker resolutions to mark global values as dso_local. 2017-11-04 17:04:39 +00:00
thinlto-summary-local-5.0.ll.bc [LTO][ThinLTO] Use the linker resolutions to mark global values as dso_local. 2017-11-04 17:04:39 +00:00
thinlto-summary-section.ll [ThinLTO] Subsume all importing checks into a single flag 2017-01-05 14:32:16 +00:00
thinlto-type-tests.ll IR: Function summary representation for type tests. 2016-12-21 23:03:45 +00:00
thinlto-type-vcalls.ll IR: Function summary extensions for whole-program devirtualization pass. 2017-02-10 22:29:38 +00:00
thinlto-unused-type-tests.ll IR: Function summary representation for type tests. 2016-12-21 23:03:45 +00:00
upgrade-dbg-value.ll Parse and print DIExpressions inline to ease IR and MIR testing 2017-08-23 20:31:27 +00:00
upgrade-dbg-value.ll.bc Remove the obsolete offset parameter from @llvm.dbg.value 2017-07-28 20:21:02 +00:00
upgrade-debug-info-for-profiling.ll Change debug-info-for-profiling from a TargetOption to a function attribute. 2017-02-01 22:45:09 +00:00
upgrade-debug-info-for-profiling.ll.bc Change debug-info-for-profiling from a TargetOption to a function attribute. 2017-02-01 22:45:09 +00:00
upgrade-global-ctors.ll
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upgrade-global-ctors.ll.bc
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upgrade-importedentity.ll Debug Info: Add a file: field to DIImportedEntity. 2017-07-19 00:09:54 +00:00
upgrade-importedentity.ll.bc Debug Info: Add a file: field to DIImportedEntity. 2017-07-19 00:09:54 +00:00
upgrade-linker-options.ll IR: Replace the "Linker Options" module flag with "llvm.linker.options" named metadata. 2017-06-12 20:10:48 +00:00
upgrade-loop-metadata.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
upgrade-loop-metadata.ll.bc
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upgrade-module-flag.ll [AutoUpgrade] Fix a compatibility issue with module flag 2017-09-15 21:12:14 +00:00
upgrade-pointer-address-space.ll [DebugInfo] Emit address space with DW_AT_address_class attribute for pointer and reference types 2017-03-08 23:55:44 +00:00
upgrade-pointer-address-space.ll.bc [DebugInfo] Emit address space with DW_AT_address_class attribute for pointer and reference types 2017-03-08 23:55:44 +00:00
upgrade-section-name.ll Bitcode: add an auto-upgrade for LTO section name 2017-10-06 18:06:59 +00:00
upgrade-subprogram-this.ll [codeview] Add DISubprogram::ThisAdjustment 2016-07-01 02:41:21 +00:00
upgrade-subprogram-this.ll.bc [codeview] Add DISubprogram::ThisAdjustment 2016-07-01 02:41:21 +00:00
upgrade-subprogram.ll [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
upgrade-subprogram.ll.bc DI: Reverse direction of subprogram -> function edge. 2015-11-05 22:03:56 +00:00
upgrade-tbaa.ll
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use-list-order.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
use-list-order2.ll [Bitcode] Add xfail test for PR24755 (uselistorder) 2015-09-10 16:02:24 +00:00
variableArgumentIntrinsic.3.2.ll
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variableArgumentIntrinsic.3.2.ll.bc
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vectorInstructions.3.2.ll
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vectorInstructions.3.2.ll.bc
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visibility-styles.3.2.ll
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visibility-styles.3.2.ll.bc
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vst-forward-declaration.ll Restore "Function bitcode index in Value Symbol Table and lazy reading support" 2015-09-17 20:12:00 +00:00
weak-cmpxchg-upgrade.ll
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weak-cmpxchg-upgrade.ll.bc
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weak-macho-3.5.ll
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weak-macho-3.5.ll.bc
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