4a07bbe3f6
Summary: There is no need to emit alias metadata for scalars, as basicaa will easily distinguish them from arrays. This reduces the size of the metadata we generate. This is especially useful after we moved to -polly-position=before-vectorizer, where a lot more scalar dependences are introduced, which increased the size of the alias analysis metadata and made us commonly reach the limits after which we do not emit alias metadata that have been introduced to prevent quadratic growth of this alias metadata. This improves 2mm performance from 1.5 seconds to 0.17 seconds. Reviewers: Meinersbur, bollu, singam-sanjay Reviewed By: Meinersbur Subscribers: pollydev, llvm-commits Tags: #polly Differential Revision: https://reviews.llvm.org/D37028 llvm-svn: 311498
89 lines
4.2 KiB
LLVM
89 lines
4.2 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze -polly-import-jscop -polly-import-jscop-postfix=transformed < %s 2>&1 | FileCheck %s
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; RUN: opt %loadPolly -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-codegen -S < %s 2>&1 | FileCheck %s --check-prefix=CODEGEN
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;
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; for (i = 0; i < _PB_NI; i++)
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; for (j = 0; j < _PB_NJ; j++)
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; for (k = 0; k < _PB_NK; ++k)
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; B[i][j] = beta * A[i][k];
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;
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;
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; CHECK: Arrays {
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; CHECK: double MemRef_B[*][1024]; // Element size 8
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; CHECK: double MemRef_beta; // Element size 8
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; CHECK: double MemRef_A[*][1056]; // Element size 8
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; CHECK: double D[270336]; // Element size 8
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; CHECK: double E[270336][200000]; // Element size 8
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; CHECK: i64 F[270336]; // Element size 8
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;
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; CHECK:New access function '{ Stmt_bb12[i0, i1, i2] -> E[i2, i0] }' detected in JSCOP file
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;
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; CODEGEN:define internal void @create_arrays(i32 %arg, i32 %arg1, i32 %arg2, double %arg3, double %beta, [1056 x double]* %A, [1024 x double]* %B, [1056 x double]* %arg7) #0 {
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; CODEGEN:bb:
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; CODEGEN: %beta.s2a = alloca double
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; CODEGEN: %D = alloca [270336 x double]
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; CODEGEN: %E = alloca [270336 x [200000 x double]]
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; CODEGEN: %F = alloca [270336 x i64]
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; CODEGEN: br label %bb8
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;
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; CODEGEN: %beta.s2a.reload = load double, double* %beta.s2a
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; CODEGEN: %polly.access.cast.E = bitcast [270336 x [200000 x double]]* %E to double*
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; CODEGEN: %polly.access.mul.E = mul nsw i64 %polly.indvar33, 200000
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; CODEGEN: %polly.access.add.E = add nsw i64 %polly.access.mul.E, %polly.indvar
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; CODEGEN: {{%.*}} = load double, double* %polly.access.E, align 8, !alias.scope [[TAG0:![0-9]+]], !noalias [[TAG2:![0-9]+]]
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; CODEGEN: store double {{%.*}}, double* %scevgep36, align 8, !alias.scope [[TAG5:![0-9]+]], !noalias [[TAG8:![0-9]+]]
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;
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; CODEGEN: [[TAG0]] = distinct !{[[TAG0]], [[TAG1:![0-9]+]], !"polly.alias.scope.E"}
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; CODEGEN: [[TAG1]] = distinct !{[[TAG1]], !"polly.alias.scope.domain"}
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; CODEGEN: [[TAG2]] = !{[[TAG3:![0-9]+]], [[TAG4:![0-9]+]], [[TAG5:![0-9]+]], [[TAG6:![0-9]+]]}
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; CODEGEN: [[TAG3]] = distinct !{[[TAG3]], [[TAG1]], !"polly.alias.scope.MemRef_B"}
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; CODEGEN: [[TAG4]] = distinct !{[[TAG4]], [[TAG1]], !"polly.alias.scope.MemRef_A"}
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; CODEGEN: [[TAG5]] = distinct !{[[TAG5]], [[TAG1]], !"polly.alias.scope.D"}
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; CODEGEN: [[TAG6]] = distinct !{[[TAG6]], [[TAG1]], !"polly.alias.scope.F"}
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; CODEGEN: [[TAG7:![0-9]+]] = !{[[TAG3]], [[TAG5]], [[TAG0]], [[TAG6]]}
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-unknown"
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; Function Attrs: nounwind uwtable
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define internal void @create_arrays(i32 %arg, i32 %arg1, i32 %arg2, double %arg3, double %beta, [1056 x double]* %A, [1024 x double]* %B, [1056 x double]* %arg7) #0 {
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bb:
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br label %bb8
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bb8: ; preds = %bb
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br label %bb9
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bb9: ; preds = %bb23, %bb8
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%tmp = phi i64 [ 0, %bb8 ], [ %tmp24, %bb23 ]
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br label %bb10
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bb10: ; preds = %bb20, %bb9
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%tmp11 = phi i64 [ 0, %bb9 ], [ %tmp21, %bb20 ]
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br label %bb12
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bb12: ; preds = %bb12, %bb10
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%tmp13 = phi i64 [ 0, %bb10 ], [ %tmp18, %bb12 ]
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%tmp14 = getelementptr inbounds [1024 x double], [1024 x double]* %B, i64 %tmp, i64 %tmp13
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%tmp15 = load double, double* %tmp14, align 8
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%tmp16 = fmul double %tmp15, %beta
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%tmp17 = getelementptr inbounds [1056 x double], [1056 x double]* %A, i64 %tmp, i64 %tmp11
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store double %tmp16, double* %tmp17, align 8
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%tmp18 = add nuw nsw i64 %tmp13, 1
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%tmp19 = icmp ne i64 %tmp18, 1024
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br i1 %tmp19, label %bb12, label %bb20
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bb20: ; preds = %bb12
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%tmp21 = add nuw nsw i64 %tmp11, 1
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%tmp22 = icmp ne i64 %tmp21, 1056
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br i1 %tmp22, label %bb10, label %bb23
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bb23: ; preds = %bb20
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%tmp24 = add nuw nsw i64 %tmp, 1
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%tmp25 = icmp ne i64 %tmp24, 1056
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br i1 %tmp25, label %bb9, label %bb26
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bb26: ; preds = %bb23
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ret void
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}
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attributes #0 = { nounwind uwtable "target-cpu"="x86-64" "target-features"="+aes,+avx,+cmov,+cx16,+fxsr,+mmx,+pclmul,+popcnt,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsaveopt" }
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