forked from OSchip/llvm-project
63 lines
1.4 KiB
LLVM
63 lines
1.4 KiB
LLVM
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; RUN: opt %loadPolly -polly-simplify -analyze < %s | FileCheck %s -match-full-lines
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; RUN: opt %loadPolly -polly-simplify -polly-codegen -S < %s | FileCheck %s -check-prefix=CODEGEN
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;
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; for (int i = 0; i < n; i+=1) {
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; (void)A[0];
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; if (21.0 == 0.0)
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; B[0] = 42.0;
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; }
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;
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define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
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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, %n
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br i1 %j.cmp, label %region_entry, label %exit
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region_entry:
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%val = load double, double* %A
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%cmp = fcmp oeq double 21.0, 0.0
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br i1 %cmp, label %region_true, label %region_exit
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region_true:
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store double 42.0, double* %B
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br label %region_exit
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region_exit:
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br label %body
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body:
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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: Statistics {
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; CHECK: Dead accesses removed: 1
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; CHECK: Dead instructions removed: 1
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; CHECK: }
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; CHECK: After accesses {
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; CHECK-NEXT: Stmt_region_entry__TO__region_exit
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; CHECK-NEXT: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_region_entry__TO__region_exit[i0] -> MemRef_B[0] };
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; CHECK-NEXT: }
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; CODEGEN: polly.stmt.region_entry:
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; CODEGEN-NEXT: %p_cmp = fcmp oeq double 2.100000e+01, 0.000000e+00
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; CODEGEN-NEXT: br i1 %p_cmp
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