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1; RUN: opt %loadNPMPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions '-passes=polly-custom<scops>' -polly-print-scops -disable-output < %s 2>&1 | FileCheck %s -match-full-lines2;3; Two PHIs, cross-referencing each other. The PHI READs must be carried-out4; before the PHI WRITEs to ensure that the value when entering the block is5; read.6; This means that either both PHIs have to be in the same statement, or the7; PHI WRITEs located in a statement after the PHIs.8;9; for (int j = 0; j < n; j += 1) {10; double valA = 42.0;11; double valB = 21.0;12;13; body:14; double tmp = valA;15; valA = valB;16; valB = tmp;17; A[0] = valA;18; }19;20define void @func(i32 %n, ptr noalias nonnull %A) {21entry:22 br label %for23 24for:25 %j = phi i32 [0, %entry], [%j.inc, %for]26 %valA = phi double [42.0, %entry], [%valB, %for]27 %valB = phi double [21.0, %entry], [%valA, %for]28 store double %valA, ptr %A29 %j.cmp = icmp slt i32 %j, %n30 %j.inc = add nuw nsw i32 %j, 131 br i1 %j.cmp, label %for, label %exit32 33exit:34 br label %return35 36return:37 ret void38}39 40 41; CHECK: Statements {42; CHECK-NEXT: Stmt_for43; CHECK-NEXT: Domain :=44; CHECK-NEXT: [n] -> { Stmt_for[i0] : 0 <= i0 <= n; Stmt_for[0] : n < 0 };45; CHECK-NEXT: Schedule :=46; CHECK-NEXT: [n] -> { Stmt_for[i0] -> [i0] : i0 <= n; Stmt_for[0] -> [0] : n < 0 };47; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]48; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valA__phi[] };49; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]50; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valA__phi[] };51; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]52; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valB__phi[] };53; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]54; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_valB__phi[] };55; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]56; CHECK-NEXT: [n] -> { Stmt_for[i0] -> MemRef_A[0] };57; CHECK-NEXT: Instructions {58; CHECK-NEXT: %valA = phi double [ 4.200000e+01, %entry ], [ %valB, %for ]59; CHECK-NEXT: %valB = phi double [ 2.100000e+01, %entry ], [ %valA, %for ]60; CHECK-NEXT: store double %valA, ptr %A, align 861; CHECK-NEXT: }62; CHECK-NEXT: }63