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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 -debug -S < %s 2>&1 | FileCheck %s
[ScopInfo] Do not try to fold array dimensions of size zero Trying to fold such kind of dimensions will result in a division by zero, which crashes the compiler. As such arrays are likely to invalidate the scop anyhow (but are not illegal in LLVM-IR), there is no point in trying to optimize the array layout. Hence, we just avoid the folding of constant dimensions of size zero. llvm-svn: 295415
2017-02-17 12:48:52 +08:00
; REQUIRES: asserts
; This test case at some point crashed Polly due to a 'division by zero'
; when trying to fold the constant dimension into outer dimension.
; We verify that this scop is detected without crash. We also test the
; output to undertand that the scop has been analyzed, but has also been
; invalidated due to the zero size dimension.
; CHECK: Assumed 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
; CHECK-NEXT: { : false }
[ScopInfo] Do not try to fold array dimensions of size zero Trying to fold such kind of dimensions will result in a division by zero, which crashes the compiler. As such arrays are likely to invalidate the scop anyhow (but are not illegal in LLVM-IR), there is no point in trying to optimize the array layout. Hence, we just avoid the folding of constant dimensions of size zero. llvm-svn: 295415
2017-02-17 12:48:52 +08:00
; CHECK-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
; CHECK-NEXT: { : false }
[ScopInfo] Do not try to fold array dimensions of size zero Trying to fold such kind of dimensions will result in a division by zero, which crashes the compiler. As such arrays are likely to invalidate the scop anyhow (but are not illegal in LLVM-IR), there is no point in trying to optimize the array layout. Hence, we just avoid the folding of constant dimensions of size zero. llvm-svn: 295415
2017-02-17 12:48:52 +08:00
; CHECK-NEXT: Arrays {
; CHECK-NEXT: i8 MemRef_arg[*][0]; // Element size 1
; CHECK-NEXT: }
; CHECK-NEXT: Arrays (Bounds as pw_affs) {
; CHECK-NEXT: i8 MemRef_arg[*][ { [] -> [(0)] } ]; // Element size 1
; CHECK-NEXT: }
; CHECK-NEXT: Alias Groups (0):
; CHECK-NEXT: n/a
; CHECK-NEXT: Statements {
; CHECK-NEXT: Stmt_bb2
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_bb2[] };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_bb2[] -> [] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_bb2[] -> MemRef_arg[0, 0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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
; CHECK-NEXT: { Stmt_bb2[] -> MemRef_arg[o0, o1] : false };
[ScopInfo] Do not try to fold array dimensions of size zero Trying to fold such kind of dimensions will result in a division by zero, which crashes the compiler. As such arrays are likely to invalidate the scop anyhow (but are not illegal in LLVM-IR), there is no point in trying to optimize the array layout. Hence, we just avoid the folding of constant dimensions of size zero. llvm-svn: 295415
2017-02-17 12:48:52 +08:00
; CHECK-NEXT: }
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"
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i32, i1) #0
define void @hoge([0 x [0 x i8]]* noalias %arg) {
bb:
br label %bb1
bb1: ; preds = %bb5, %bb
br i1 false, label %bb5, label %bb2
bb2: ; preds = %bb1
%tmp = getelementptr [0 x [0 x i8]], [0 x [0 x i8]]* %arg, i64 0, i64 0, i64 0
store i8 32, i8* %tmp, align 1
%tmp3 = getelementptr [0 x [0 x i8]], [0 x [0 x i8]]* %arg, i64 0, i64 0, i64 0
%tmp4 = getelementptr i8, i8* %tmp3, i64 1
tail call void @llvm.memset.p0i8.i64(i8* %tmp4, i8 32, i64 0, i32 1, i1 false)
br label %bb5
bb5: ; preds = %bb2, %bb1
br i1 undef, label %bb6, label %bb1
bb6: ; preds = %bb5
ret void
}