; RUN: opt < %s -disable-output "-passes=print<ddg>" 2>&1 | FileCheck %s
; CHECK-LABEL: 'DDG' for loop 'test1.for.body':
; CHECK: Node Address:[[PI:0x[0-9a-f]*]]:pi-block
; CHECK-NEXT: --- start of nodes in pi-block ---
; CHECK: Node Address:[[N1:0x[0-9a-f]*]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %i.02 = phi i64 [ %inc, %test1.for.body ], [ 0, %test1.for.body.preheader ]
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N2:0x[0-9a-f]*]]
; CHECK: Node Address:[[N2]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %inc = add i64 %i.02, 1
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N1]]
; CHECK-NEXT: --- end of nodes in pi-block ---
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N3:0x[0-9a-f]*]]
; CHECK-NEXT: [def-use] to [[N4:0x[0-9a-f]*]]
; CHECK-NEXT: [def-use] to [[N5:0x[0-9a-f]*]]
; CHECK: Node Address:[[N5]]:multi-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %exitcond = icmp ne i64 %inc, %n
; CHECK-NEXT: br i1 %exitcond, label %test1.for.body, label %for.end.loopexit
; CHECK-NEXT: Edges:none!
; CHECK: Node Address:[[N4]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %arrayidx1 = getelementptr inbounds float, float* %a, i64 %i.02
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N6:0x[0-9a-f]*]]
; CHECK: Node Address:[[N3]]:multi-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %arrayidx = getelementptr inbounds float, float* %b, i64 %i.02
; CHECK-NEXT: %0 = load float, float* %arrayidx, align 4
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N7:0x[0-9a-f]*]]
; CHECK: Node Address:[[N8:0x[0-9a-f]*]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %conv = uitofp i64 %n to float
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N7]]
; CHECK: Node Address:[[N7]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %add = fadd float %0, %conv
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N6]]
; CHECK: Node Address:[[N6]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: store float %add, float* %arrayidx1, align 4
; CHECK-NEXT: Edges:none!
;; No memory dependencies.
;; void test1(unsigned long n, float * restrict a, float * restrict b) {
;; for (unsigned long i = 0; i < n; i++)
;; a[i] = b[i] + n;
;; }
define void @test1(i64 %n, float* noalias %a, float* noalias %b) {
entry:
%exitcond1 = icmp ne i64 0, %n
br i1 %exitcond1, label %test1.for.body, label %for.end
test1.for.body: ; preds = %entry, %test1.for.body
%i.02 = phi i64 [ %inc, %test1.for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float, float* %b, i64 %i.02
%0 = load float, float* %arrayidx, align 4
%conv = uitofp i64 %n to float
%add = fadd float %0, %conv
%arrayidx1 = getelementptr inbounds float, float* %a, i64 %i.02
store float %add, float* %arrayidx1, align 4
%inc = add i64 %i.02, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %test1.for.body, label %for.end
for.end: ; preds = %test1.for.body, %entry
ret void
}
; CHECK-LABEL: 'DDG' for loop 'test2.for.body':
; CHECK: Node Address:[[PI:0x[0-9a-f]*]]:pi-block
; CHECK-NEXT: --- start of nodes in pi-block ---
; CHECK: Node Address:[[N1:0x[0-9a-f]*]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %i.02 = phi i64 [ %inc, %test2.for.body ], [ 0, %test2.for.body.preheader ]
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N2:0x[0-9a-f]*]]
; CHECK: Node Address:[[N2]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %inc = add i64 %i.02, 1
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N1]]
; CHECK-NEXT: --- end of nodes in pi-block ---
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N3:0x[0-9a-f]*]]
; CHECK-NEXT: [def-use] to [[N4:0x[0-9a-f]*]]
; CHECK-NEXT: [def-use] to [[N5:0x[0-9a-f]*]]
; CHECK-NEXT: [def-use] to [[N6:0x[0-9a-f]*]]
; CHECK: Node Address:[[N6]]:multi-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %exitcond = icmp ne i64 %inc, %n
; CHECK-NEXT: br i1 %exitcond, label %test2.for.body, label %for.end.loopexit
; CHECK-NEXT: Edges:none!
; CHECK: Node Address:[[N5]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %arrayidx2 = getelementptr inbounds float, float* %a, i64 %i.02
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N7:0x[0-9a-f]*]]
; CHECK: Node Address:[[N4]]:multi-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %arrayidx1 = getelementptr inbounds float, float* %a, i64 %i.02
; CHECK-NEXT: %1 = load float, float* %arrayidx1, align 4
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N8:0x[0-9a-f]*]]
; CHECK-NEXT: [memory] to [[N7]]
; CHECK: Node Address:[[N3]]:multi-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %arrayidx = getelementptr inbounds float, float* %b, i64 %i.02
; CHECK-NEXT: %0 = load float, float* %arrayidx, align 4
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N8]]
; CHECK: Node Address:[[N8]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: %add = fadd float %0, %1
; CHECK-NEXT: Edges:
; CHECK-NEXT: [def-use] to [[N7]]
; CHECK: Node Address:[[N7]]:single-instruction
; CHECK-NEXT: Instructions:
; CHECK-NEXT: store float %add, float* %arrayidx2, align 4
; CHECK-NEXT: Edges:none!
;; Loop-independent memory dependencies.
;; void test2(unsigned long n, float * restrict a, float * restrict b) {
;; for (unsigned long i = 0; i < n; i++)
;; a[i] = b[i] + a[i];
;; }
define void @test2(i64 %n, float* noalias %a, float* noalias %b) {
entry:
%exitcond1 = icmp ne i64 0, %n
br i1 %exitcond1, label %test2.for.body, label %for.end
test2.for.body: ; preds = %entry, %test2.for.body
%i.02 = phi i64 [ %inc, %test2.for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float, float* %b, i64 %i.02
%0 = load float, float* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds float, float* %a, i64 %i.02
%1 = load float, float* %arrayidx1, align 4
%add = fadd float %0, %1
%arrayidx2 = getelementptr inbounds float, float* %a, i64 %i.02
store float %add, float* %arrayidx2, align 4
%inc = add i64 %i.02, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %test2.for.body, label %for.end
for.end: ; preds = %test2.for.body, %entry
ret void
}