a43ba2d84f
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
49 lines
1.6 KiB
LLVM
49 lines
1.6 KiB
LLVM
; RUN: opt %loadPolly -polly-stmt-granularity=bb -analyze -polly-scops %s | FileCheck %s
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; CHECK-LABEL: Function: foo
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;
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; CHECK: Statements {
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; CHECK-NEXT: Stmt_body
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: { Stmt_body[i0] : 0 <= i0 <= 100 };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: { Stmt_body[i0] -> [i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_body[i0] -> MemRef_sum__phi[] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_body[i0] -> MemRef_sum__phi[] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_body[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_body[i0] -> MemRef_sum_next[] };
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; CHECK-NEXT: }
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define float @foo(float* %A) {
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entry:
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br label %header
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header:
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fence seq_cst
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br i1 true, label %body, label %exit
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body:
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%i = phi i64 [ 0, %header ], [ %next, %body ]
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%sum = phi float [ 0.0, %header ], [ %sum.next, %body ]
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%arrayidx = getelementptr float, float* %A, i64 %i
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%scalar = fadd float 0.0, 0.0
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%next = add nuw nsw i64 %i, 1
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%val = load float, float* %arrayidx
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%sum.next = fadd float %sum, %val
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%cond = icmp ne i64 %i, 100
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br i1 %cond, label %body, label %after
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after:
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br label %exit
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exit:
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%phi = phi float [%sum.next, %after], [0.0, %header]
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ret float %phi
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}
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