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
58 lines
1.6 KiB
LLVM
58 lines
1.6 KiB
LLVM
; RUN: opt %loadPolly -basicaa -polly-stmt-granularity=bb -polly-import-jscop -polly-import-jscop-postfix=transformed -polly-vectorizer=polly -polly-opt-isl -polly-ast -polly-codegen -S < %s | FileCheck %s
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;
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; Polly's vectorizer does not support partial accesses.
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;
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; for (int j = 0; j < 4; j += 1) {
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;body:
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; val = 21.0 + 21.0;
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; if (j > 1)
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;user:
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; A[0] = val;
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; }
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define void @partial_write_mapped_vector(double* noalias nonnull %A) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, 4
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br i1 %j.cmp, label %body, label %exit
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body:
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%val = fadd double 21.0, 21.0
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%if.cond = icmp sgt i32 %j, 1
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br i1 %if.cond, label %user, label %inc
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user:
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%elt= getelementptr inbounds double, double* %A, i32 %j
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store double %val, double* %elt
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK-LABEL: polly.stmt.body:
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; CHECK-NEXT: %p_val = fadd double 2.100000e+01, 2.100000e+01
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; CHECK-NEXT: %0 = trunc i64 %polly.indvar to i32
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; CHECK-NEXT: %p_if.cond = icmp sgt i32 %0, 1
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; CHECK-NEXT: %1 = icmp sge i64 %polly.indvar, 2
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; CHECK-NEXT: %polly.Stmt_body_Write0.cond = icmp ne i1 %1, false
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; CHECK-NEXT: br i1 %polly.Stmt_body_Write0.cond, label %polly.stmt.body.Stmt_body_Write0.partial, label %polly.stmt.body.cont
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; CHECK-LABEL: polly.stmt.body.Stmt_body_Write0.partial:
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; CHECK-NEXT: %polly.access.A = getelementptr double, double* %A, i64 1
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; CHECK-NEXT: store double %p_val, double* %polly.access.A
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; CHECK-NEXT: br label %polly.stmt.body.cont
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; CHECK-LABEL: polly.stmt.body.cont:
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