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[ScopBuilder] Make -polly-stmt-granularity=scalar-indep the default. Splitting basic blocks into multiple statements if there are now additional scalar dependencies gives more freedom to the scheduler, but more statements also means higher compile-time complexity. Switch to finer statement granularity, the additional compile time should be limited by the number of operations quota. The regression tests are written for the -polly-stmt-granularity=bb setting, therefore we add that flag to those tests that break with the new default. Some of the tests only fail because the statements are named differently due to a basic block resulting in multiple statements, but which are removed during simplification of statements without side-effects. Previous commits tried to reduce this effect, but it is not completely avoidable. Differential Revision: https://reviews.llvm.org/D42151 llvm-svn: 324169
2018-02-03 14:59:47 +08:00
; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-scops -analyze -polly-allow-modref-calls \
[tests] Force invariant load hoisting for test cases that need it -- III llvm-svn: 278673
2016-08-15 23:56:24 +08:00
; RUN: -polly-invariant-load-hoisting=true \
Add option to disallow modref function calls in scops. This might be useful to evaluate the benefit of us handling modref funciton calls. Also, a new bug that was triggered by modref function calls was recently reported http://llvm.org/PR27035. To ensure the same issue does not cause troubles for other people, we temporarily disable this until the bug is resolved. llvm-svn: 264140
2016-03-23 14:40:15 +08:00
; RUN: < %s | FileCheck %s
[ScopBuilder] Make -polly-stmt-granularity=scalar-indep the default. Splitting basic blocks into multiple statements if there are now additional scalar dependencies gives more freedom to the scheduler, but more statements also means higher compile-time complexity. Switch to finer statement granularity, the additional compile time should be limited by the number of operations quota. The regression tests are written for the -polly-stmt-granularity=bb setting, therefore we add that flag to those tests that break with the new default. Some of the tests only fail because the statements are named differently due to a basic block resulting in multiple statements, but which are removed during simplification of statements without side-effects. Previous commits tried to reduce this effect, but it is not completely avoidable. Differential Revision: https://reviews.llvm.org/D42151 llvm-svn: 324169
2018-02-03 14:59:47 +08:00
; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-scops -polly-allow-nonaffine -analyze \
[tests] Force invariant load hoisting for test cases that need it -- III llvm-svn: 278673
2016-08-15 23:56:24 +08:00
; RUN: -polly-invariant-load-hoisting=true \
Add option to disallow modref function calls in scops. This might be useful to evaluate the benefit of us handling modref funciton calls. Also, a new bug that was triggered by modref function calls was recently reported http://llvm.org/PR27035. To ensure the same issue does not cause troubles for other people, we temporarily disable this until the bug is resolved. llvm-svn: 264140
2016-03-23 14:40:15 +08:00
; RUN: -polly-allow-modref-calls < %s | FileCheck %s --check-prefix=NONAFFINE
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; TODO: We should delinearize the accesses despite the use in a call to a
; readonly function. For now we verify we do not delinearize them though.
; CHECK: Function: ham
; CHECK-NEXT: Region: %bb12---%bb28
; CHECK-NEXT: Max Loop Depth: 1
; CHECK-NEXT: Invariant Accesses: {
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb12[] -> MemRef_arg1[0] };
; CHECK-NEXT: Execution Context: [tmp14, p_1] -> { : }
; CHECK-NEXT: }
; CHECK-NEXT: Context:
; CHECK-NEXT: [tmp14, p_1] -> { : -9223372036854775808 <= tmp14 <= 9223372036854775807 and -9223372036854775808 <= p_1 <= 9223372036854775807 }
; CHECK-NEXT: Assumed Context:
; CHECK-NEXT: [tmp14, p_1] -> { : }
Track assumptions and restrictions separatly In order to speed up compile time and to avoid random timeouts we now separately track assumptions and restrictions. In this context assumptions describe parameter valuations we need and restrictions describe parameter valuations we do not allow. During AST generation we create a runtime check for both, whereas the one for the restrictions is negated before a conjunction is build. Except the In-Bounds assumptions we currently only track restrictions. Differential Revision: http://reviews.llvm.org/D17247 llvm-svn: 262328
2016-03-01 21:06:28 +08:00
; CHECK-NEXT: Invalid Context:
Record wrapping assumptions early Utilizing the record option for assumptions we can simplify the wrapping assumption generation a lot. Additionally, we can now report locations together with wrapping assumptions, though they might not be accurate yet. llvm-svn: 266069
2016-04-12 21:28:39 +08:00
; CHECK-NEXT: [tmp14, p_1] -> { : tmp14 > 0 and (p_1 <= -1152921504606846977 or tmp14 >= 1152921504606846977 or p_1 >= 1152921504606846977 - tmp14) }
[Polly] Track defined behavior for PHI predecessor computation. ZoneAlgorithms's computePHI relies on being provided with consistent a schedule to compute the statement prodecessors of a statement containing PHINodes. Otherwise unexpected results such as PHI nodes with multiple predecessors can occur which would result in problems in the algorithms expecting consistent data. In the added test case, statement instances are scrubbed from the SCoP their execution would result in undefined behavior (Due to a nsw overflow). As already being undefined behavior in LLVM-IR, neither AssumedContext nor InvalidContext are updated, giving computePHI no means to avoid these cases. Intoduce a new SCoP property, the DefinedBehaviorContext, that among the runtime-checked conditions, also tracks the assumptions not needing a runtime check, in particular those affecting the assumed control flow. This replaces the manual combination of the 3 other contexts that was already done in computePHI and setNewAccessRelation. Currently, the only additional assumption is that loop induction variables will nsw flag for not wrap, but potentially more can be added. Use in hasFeasibleRuntimeContext, isl::ast_build and gisting are other potential uses. To limit computational complexity, the DefinedBehaviorContext is not availabe if it grows too large (atm hardcoded to 8 disjuncts). Possible other fixes include bailing out in computePHI when inconsistencies are detected, choose an arbitrary value for inconsistent cases (since it is undefined behavior anyways), or make the code receiving the result from ComputePHI handle inconsistent data. All of them reduce the quality of implementation having to bail out more often and disabling the ability to assert on actually wrong results. This fixes llvm.org/PR48783.
2021-01-22 11:20:53 +08:00
; CHECK: p0: %tmp14
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; CHECK-NEXT: p1: {0,+,(0 smax %tmp)}<%bb12>
; CHECK-NEXT: Arrays {
; CHECK-NEXT: i64 MemRef_arg1[*]; // Element size 8
[ScopBuilder] Build escaping dependencies separately. Instructions that compute escaping values might be synthesizable and therefore not contained in any ScopStmt. When buildAccessFunctions is changed to only iterate over the instruction list of statement, "free" instructions still need to be written. We do this after the main MemoryAccesses have been created. This can change the order in which MemoryAccesses are created, but has otherwise no functional change. llvm-svn: 314663
2017-10-02 19:41:19 +08:00
; CHECK-NEXT: i64 MemRef_tmp13; // Element size 8
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; CHECK-NEXT: double MemRef_arg4[*]; // Element size 8
; CHECK-NEXT: }
; CHECK-NEXT: Arrays (Bounds as pw_affs) {
; CHECK-NEXT: i64 MemRef_arg1[*]; // Element size 8
[ScopBuilder] Build escaping dependencies separately. Instructions that compute escaping values might be synthesizable and therefore not contained in any ScopStmt. When buildAccessFunctions is changed to only iterate over the instruction list of statement, "free" instructions still need to be written. We do this after the main MemoryAccesses have been created. This can change the order in which MemoryAccesses are created, but has otherwise no functional change. llvm-svn: 314663
2017-10-02 19:41:19 +08:00
; CHECK-NEXT: i64 MemRef_tmp13; // Element size 8
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; CHECK-NEXT: double MemRef_arg4[*]; // Element size 8
; CHECK-NEXT: }
; CHECK-NEXT: Alias Groups (0):
; CHECK-NEXT: n/a
; CHECK-NEXT: Statements {
; CHECK-NEXT: Stmt_bb12
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb12[] };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb12[] -> [0, 0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb12[] -> MemRef_tmp13[] };
; CHECK-NEXT: Stmt_bb17
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb17[i0] : 0 <= i0 < tmp14 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb17[i0] -> [1, i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb17[i0] -> MemRef_arg4[p_1 + i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb17[i0] -> MemRef_arg1[o0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [tmp14, p_1] -> { Stmt_bb17[i0] -> MemRef_arg4[o0] };
; CHECK-NEXT: }
; NONAFFINE: Function: ham
; NONAFFINE-NEXT: Region: %bb5---%bb32
; NONAFFINE-NEXT: Max Loop Depth: 2
; NONAFFINE-NEXT: Invariant Accesses: {
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb5[] -> MemRef_arg[0] };
; NONAFFINE-NEXT: Execution Context: [tmp9, tmp14] -> { : }
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb12[i0] -> MemRef_arg1[0] };
; NONAFFINE-NEXT: Execution Context: [tmp9, tmp14] -> { : }
; NONAFFINE-NEXT: }
; NONAFFINE-NEXT: Context:
; NONAFFINE-NEXT: [tmp9, tmp14] -> { : -9223372036854775808 <= tmp9 <= 9223372036854775807 and -9223372036854775808 <= tmp14 <= 9223372036854775807 }
; NONAFFINE-NEXT: Assumed Context:
; NONAFFINE-NEXT: [tmp9, tmp14] -> { : }
Track assumptions and restrictions separatly In order to speed up compile time and to avoid random timeouts we now separately track assumptions and restrictions. In this context assumptions describe parameter valuations we need and restrictions describe parameter valuations we do not allow. During AST generation we create a runtime check for both, whereas the one for the restrictions is negated before a conjunction is build. Except the In-Bounds assumptions we currently only track restrictions. Differential Revision: http://reviews.llvm.org/D17247 llvm-svn: 262328
2016-03-01 21:06:28 +08:00
; NONAFFINE-NEXT: Invalid Context:
Update isl to isl-0.18-1047-g4a20ef8 This update: - Removes several deprecated functions (e.g., isl_band). - Improves the pretty-printing of sets by detecting modulos and "false" equalities. - Minor improvements to coalescing and increased robustness of the isl scheduler. This update does not yet include isl commit isl-0.18-90-gd00cb45 (isl_pw_*_alloc: add missing check for compatible spaces, Wed Sep 6 12:18:04 2017 +0200), as this additional check is too tight and unfortunately causes two test case failures in Polly. A patch has been submitted to isl and will be included in the next isl update for Polly. llvm-svn: 325557
2018-02-20 15:26:42 +08:00
; NONAFFINE-NEXT: [tmp9, tmp14] -> { : false }
[Polly] Track defined behavior for PHI predecessor computation. ZoneAlgorithms's computePHI relies on being provided with consistent a schedule to compute the statement prodecessors of a statement containing PHINodes. Otherwise unexpected results such as PHI nodes with multiple predecessors can occur which would result in problems in the algorithms expecting consistent data. In the added test case, statement instances are scrubbed from the SCoP their execution would result in undefined behavior (Due to a nsw overflow). As already being undefined behavior in LLVM-IR, neither AssumedContext nor InvalidContext are updated, giving computePHI no means to avoid these cases. Intoduce a new SCoP property, the DefinedBehaviorContext, that among the runtime-checked conditions, also tracks the assumptions not needing a runtime check, in particular those affecting the assumed control flow. This replaces the manual combination of the 3 other contexts that was already done in computePHI and setNewAccessRelation. Currently, the only additional assumption is that loop induction variables will nsw flag for not wrap, but potentially more can be added. Use in hasFeasibleRuntimeContext, isl::ast_build and gisting are other potential uses. To limit computational complexity, the DefinedBehaviorContext is not availabe if it grows too large (atm hardcoded to 8 disjuncts). Possible other fixes include bailing out in computePHI when inconsistencies are detected, choose an arbitrary value for inconsistent cases (since it is undefined behavior anyways), or make the code receiving the result from ComputePHI handle inconsistent data. All of them reduce the quality of implementation having to bail out more often and disabling the ability to assert on actually wrong results. This fixes llvm.org/PR48783.
2021-01-22 11:20:53 +08:00
; NONAFFINE: p0: %tmp9
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; NONAFFINE-NEXT: p1: %tmp14
; NONAFFINE-NEXT: Arrays {
; NONAFFINE-NEXT: i64 MemRef_arg[*]; // Element size 8
[ScopBuilder] Build invariant loads separately. Create the MemoryAccesses of invariant loads separately and before all other MemoryAccesses. Invariant loads are classified as synthesizable and therefore are not contained in any statement. When iterating over all instructions of all statements, the invariant loads are consequently not processed and iterating over them separately becomes necessary. This patch can change the order in which MemoryAccesses are created, but otherwise has no functional change. Some temporary code is introduced to ensure correctness, but will be removed in the next commit. llvm-svn: 314664
2017-10-02 19:41:27 +08:00
; NONAFFINE-NEXT: i64 MemRef_arg1[*]; // Element size 8
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; NONAFFINE-NEXT: i64 MemRef_tmp7; // Element size 8
; NONAFFINE-NEXT: i64 MemRef_tmp8; // Element size 8
; NONAFFINE-NEXT: double MemRef_arg4[*]; // Element size 8
; NONAFFINE-NEXT: }
; NONAFFINE-NEXT: Arrays (Bounds as pw_affs) {
; NONAFFINE-NEXT: i64 MemRef_arg[*]; // Element size 8
[ScopBuilder] Build invariant loads separately. Create the MemoryAccesses of invariant loads separately and before all other MemoryAccesses. Invariant loads are classified as synthesizable and therefore are not contained in any statement. When iterating over all instructions of all statements, the invariant loads are consequently not processed and iterating over them separately becomes necessary. This patch can change the order in which MemoryAccesses are created, but otherwise has no functional change. Some temporary code is introduced to ensure correctness, but will be removed in the next commit. llvm-svn: 314664
2017-10-02 19:41:27 +08:00
; NONAFFINE-NEXT: i64 MemRef_arg1[*]; // Element size 8
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; NONAFFINE-NEXT: i64 MemRef_tmp7; // Element size 8
; NONAFFINE-NEXT: i64 MemRef_tmp8; // Element size 8
; NONAFFINE-NEXT: double MemRef_arg4[*]; // Element size 8
; NONAFFINE-NEXT: }
; NONAFFINE-NEXT: Alias Groups (0):
; NONAFFINE-NEXT: n/a
; NONAFFINE-NEXT: Statements {
; NONAFFINE-NEXT: Stmt_bb5
; NONAFFINE-NEXT: Domain :=
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb5[] };
; NONAFFINE-NEXT: Schedule :=
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb5[] -> [0, 0, 0] };
; NONAFFINE-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb5[] -> MemRef_tmp7[] };
; NONAFFINE-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb5[] -> MemRef_tmp8[] };
; NONAFFINE-NEXT: Stmt_bb17
; NONAFFINE-NEXT: Domain :=
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] : 0 <= i0 < tmp9 and 0 <= i1 < tmp14 };
; NONAFFINE-NEXT: Schedule :=
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> [1, i0, i1] };
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_tmp7[] };
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_tmp8[] };
; NONAFFINE-NEXT: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0]
Do not use wrapping ranges to bound non-affine accesses When deriving the range of valid values of a scalar evolution expression might be a range [12, 8), where the upper bound is smaller than the lower bound and where the range is expected to possibly wrap around. We theoretically could model such a range as a union of two non-wrapping ranges, but do not do this as of yet. Instead, we just do not derive any bounds. Before this change, we could have obtained bounds where the maximal possible value is strictly smaller than the minimal possible value, which is incorrect and also caused assertions during scop modeling. llvm-svn: 294891
2017-02-12 16:11:12 +08:00
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_arg4[o0] };
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_arg[o0] };
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
[ScopBuilder] Build invariant loads separately. Create the MemoryAccesses of invariant loads separately and before all other MemoryAccesses. Invariant loads are classified as synthesizable and therefore are not contained in any statement. When iterating over all instructions of all statements, the invariant loads are consequently not processed and iterating over them separately becomes necessary. This patch can change the order in which MemoryAccesses are created, but otherwise has no functional change. Some temporary code is introduced to ensure correctness, but will be removed in the next commit. llvm-svn: 314664
2017-10-02 19:41:27 +08:00
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_arg1[o0] };
; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
Support calls with known ModRef function behaviour Check the ModRefBehaviour of functions in order to decide whether or not a call instruction might be acceptable. Differential Revision: http://reviews.llvm.org/D5227 llvm-svn: 261866
2016-02-25 22:08:48 +08:00
; NONAFFINE-NEXT: [tmp9, tmp14] -> { Stmt_bb17[i0, i1] -> MemRef_arg4[o0] };
target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
define void @ham(i64* noalias %arg, i64* noalias %arg1, i64* noalias %arg2, i64* noalias %arg3, [1000 x double]* noalias %arg4) unnamed_addr {
bb:
br label %bb5
bb5: ; preds = %bb
%tmp = load i64, i64* %arg1, align 8
%tmp6 = icmp slt i64 %tmp, 0
%tmp7 = select i1 %tmp6, i64 0, i64 %tmp
%tmp8 = xor i64 %tmp7, -1
%tmp9 = load i64, i64* %arg, align 8
%tmp10 = icmp sgt i64 %tmp9, 0
br i1 %tmp10, label %bb11, label %bb32
bb11: ; preds = %bb5
br label %bb12
bb12: ; preds = %bb28, %bb11
%tmp13 = phi i64 [ %tmp30, %bb28 ], [ 1, %bb11 ]
%tmp14 = load i64, i64* %arg1, align 8
%tmp15 = icmp sgt i64 %tmp14, 0
br i1 %tmp15, label %bb16, label %bb28
bb16: ; preds = %bb12
br label %bb17
bb17: ; preds = %bb17, %bb16
%tmp18 = phi i64 [ %tmp26, %bb17 ], [ 1, %bb16 ]
%tmp19 = mul i64 %tmp13, %tmp7
%tmp20 = add i64 %tmp19, %tmp8
%tmp21 = add i64 %tmp20, %tmp18
%tmp22 = add i64 %tmp18, %tmp13
%tmp23 = sitofp i64 %tmp22 to double
%tmp24 = getelementptr [1000 x double], [1000 x double]* %arg4, i64 0, i64 %tmp21
%call = call double @func(double* %tmp24) #2
%sum = fadd double %call, %tmp23
store double %sum, double* %tmp24, align 8
%tmp25 = icmp eq i64 %tmp18, %tmp14
%tmp26 = add i64 %tmp18, 1
br i1 %tmp25, label %bb27, label %bb17
bb27: ; preds = %bb17
br label %bb28
bb28: ; preds = %bb27, %bb12
%tmp29 = icmp eq i64 %tmp13, %tmp9
%tmp30 = add i64 %tmp13, 1
br i1 %tmp29, label %bb31, label %bb12
bb31: ; preds = %bb28
br label %bb32
bb32: ; preds = %bb31, %bb5
ret void
}
declare double @func(double*) #1
attributes #1 = { nounwind readonly }