root-node.ll
1.83 KB
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; RUN: opt < %s -disable-output "-passes=print<ddg>" 2>&1 | FileCheck %s
; CHECK-LABEL: 'DDG' for loop 'test1.for.body':
; CHECK: Node Address:[[ROOT:0x[0-9a-f]*]]:root
; CHECK-NEXT: Edges:
; CHECK-NEXT: [rooted] to [[N1:0x[0-9a-f]*]]
; CHECK-NEXT: [rooted] to [[N2:0x[0-9a-f]*]]
; CHECK: Node Address:[[N2]]:pi-block
; CHECK: %i1.02 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %test1.for.body ]
; CHECK: Node Address:[[N1]]:pi-block
; CHECK: %i2.03 = phi i64 [ 0, %for.body.lr.ph ], [ %inc2, %test1.for.body ]
;; // Two separate components in the graph. Root node must link to both.
;; void test1(unsigned long n, float * restrict a, float * restrict b) {
;; for (unsigned long i1 = 0, i2 = 0; i1 < n; i1++, i2++) {
;; a[i1] = 1;
;; b[i2] = -1;
;; }
;; }
define void @test1(i64 %n, float* noalias %a, float* noalias %b) {
entry:
%cmp1 = icmp ult i64 0, %n
br i1 %cmp1, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
br label %test1.for.body
test1.for.body: ; preds = %for.body.lr.ph, %test1.for.body
%i2.03 = phi i64 [ 0, %for.body.lr.ph ], [ %inc2, %test1.for.body ]
%i1.02 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %test1.for.body ]
%arrayidx = getelementptr inbounds float, float* %a, i64 %i1.02
store float 1.000000e+00, float* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds float, float* %b, i64 %i2.03
store float -1.000000e+00, float* %arrayidx1, align 4
%inc = add i64 %i1.02, 1
%inc2 = add i64 %i2.03, 1
%cmp = icmp ult i64 %inc, %n
br i1 %cmp, label %test1.for.body, label %for.cond.for.end_crit_edge
for.cond.for.end_crit_edge: ; preds = %test1.for.body
br label %for.end
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
ret void
}