granularity_scalar-indep.ll
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; RUN: opt %loadPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions -polly-scops -analyze < %s | FileCheck %s -match-full-lines
;
; Split a block into two independent statements that share no scalar.
; This case has the instructions of the two statements interleaved, such that
; splitting the BasicBlock in the middle would cause a scalar dependency.
;
; for (int j = 0; j < n; j += 1) {
; body:
; double valA = A[0];
; double valB = 21.0 + 21.0;
; A[0] = valA;
; B[0] = valB;
; }
;
define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
entry:
br label %for
for:
%j = phi i32 [0, %entry], [%j.inc, %inc]
%j.cmp = icmp slt i32 %j, %n
br i1 %j.cmp, label %body, label %exit
body:
%valA = load double, double* %A
%valB = fadd double 21.0, 21.0
store double %valA, double* %A
store double %valB, double* %B
br label %inc
inc:
%j.inc = add nuw nsw i32 %j, 1
br label %for
exit:
br label %return
return:
ret void
}
; CHECK: Statements {
; CHECK-NEXT: Stmt_body
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [n] -> { Stmt_body[i0] : 0 <= i0 < n };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [n] -> { Stmt_body[i0] -> [i0, 0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_body[i0] -> MemRef_A[0] };
; CHECK-NEXT: Instructions {
; CHECK-NEXT: %valA = load double, double* %A, align 8
; CHECK-NEXT: store double %valA, double* %A, align 8
; CHECK-NEXT: }
; CHECK-NEXT: Stmt_body_b
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [n] -> { Stmt_body_b[i0] : 0 <= i0 < n };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [n] -> { Stmt_body_b[i0] -> [i0, 1] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_body_b[i0] -> MemRef_B[0] };
; CHECK-NEXT: Instructions {
; CHECK-NEXT: %valB = fadd double 2.100000e+01, 2.100000e+01
; CHECK-NEXT: store double %valB, double* %B, align 8
; CHECK-NEXT: }
; CHECK-NEXT: }