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