75 lines
4.2 KiB
LLVM
75 lines
4.2 KiB
LLVM
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; RUN: opt -aa-pipeline=basic-aa -passes=dot-ddg -dot-ddg-filename-prefix=%t < %s 2>&1 > /dev/null
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; RUN: FileCheck %s -input-file=%t.foo.for.body.dot
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; RUN: opt -aa-pipeline=basic-aa -passes=dot-ddg -dot-ddg-filename-prefix=%t -dot-ddg-only < %s 2>&1 > /dev/null
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; RUN: FileCheck %s -input-file=%t.foo.for.body.dot -check-prefix=CHECK-ONLY
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target datalayout = "e-m:e-i64:64-n32:64-v256:256:256-v512:512:512"
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; Test the dot graph printer for a non-trivial DDG graph generated from
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; the following test case. In particular it tests that pi-blocks are
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; printed properly and that multiple memory dependencies on a single edge
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; are shown in the full dot graph.
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;
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; void foo(float * restrict A, float * restrict B, int n) {
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; for (int i = 0; i < n; i++) {
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; A[i] = A[i] + B[i];
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; B[i+1] = A[i] + 1;
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; }
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; }
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; CHECK: digraph "DDG for 'foo.for.body'"
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; CHECK-NEXT: label="DDG for 'foo.for.body'";
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; CHECK: {{Node0x.*}} [shape=record,label="{\<kind:root\>\nroot\n}"]
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; CHECK: {{Node0x.*}} -> {{Node0x.*}}[label="[rooted]"]
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; CHECK-COUNT-6: {{Node0x.*}} -> {{Node0x.*}}[label="[def-use]"]
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; CHECK-NOT: {{Node0x.*}} -> {{Node0x.*}}[label="[def-use]"]
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; CHECK: [shape=record,label="{\<kind:single-instruction\>\n %arrayidx10 = getelementptr inbounds float, float* %B, i64 %indvars.iv.next\n}"];
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; CHECK: [shape=record,label="{\<kind:multi-instruction\>\n %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv\n %0 = load float, float* %arrayidx, align 4\n}"];
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; CHECK: {{Node0x.*}} -> {{Node0x.*}}[label="[consistent anti [0|<]!, consistent input [0|<]!]"]
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; CHECK: [shape=record,label="{\<kind:pi-block\>\n--- start of nodes in pi-block ---\n\<kind:single-instruction\>\n %1 = load float, float* %arrayidx2, align 4\n\n\<kind:single-instruction\>\n %add = fadd fast float %0, %1\n\n\<kind:single-instruction\>\n store float %add, float* %arrayidx4, align 4\n\n\<kind:multi-instruction\>\n %2 = load float, float* %arrayidx6, align 4\n %add7 = fadd fast float %2, 1.000000e+00\n\n\<kind:single-instruction\>\n store float %add7, float* %arrayidx10, align 4\n--- end of nodes in pi-block ---\n}"];
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; CHECK-ONLY: digraph "DDG for 'foo.for.body'"
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; CHECK-ONLY-NEXT: label="DDG for 'foo.for.body'";
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; CHECK-ONLY: [shape=record,label="{pi-block\nwith\n2 nodes\n}"];
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; CHECK-ONLY-COUNT-6: {{Node0x.*}} -> {{Node0x.*}}[label="[def-use]"];
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; CHECK-NOT: {{Node0x.*}} -> {{Node0x.*}}[label="[def-use]"];
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; CHECK-ONLY: [shape=record,label="{ %arrayidx10 = getelementptr inbounds float, float* %B, i64 %indvars.iv.next\n}"];
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; CHECK-ONLY: [shape=record,label="{ %arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv\n %0 = load float, float* %arrayidx, align 4\n}"];
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; CHECK-ONLY: {{Node0x.*}} -> {{Node0x.*}}[label="[memory]"]
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; CHECK-ONLY: [shape=record,label="{pi-block\nwith\n5 nodes\n}"];
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define void @foo(float* noalias %A, float* noalias %B, i32 signext %n) {
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entry:
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%cmp1 = icmp sgt i32 %n, 0
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br i1 %cmp1, label %for.body.preheader, label %for.end
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for.body.preheader: ; preds = %entry
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%wide.trip.count = zext i32 %n to i64
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %A, i64 %indvars.iv
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%0 = load float, float* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds float, float* %B, i64 %indvars.iv
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%1 = load float, float* %arrayidx2, align 4
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%add = fadd fast float %0, %1
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%arrayidx4 = getelementptr inbounds float, float* %A, i64 %indvars.iv
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store float %add, float* %arrayidx4, align 4
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%arrayidx6 = getelementptr inbounds float, float* %A, i64 %indvars.iv
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%2 = load float, float* %arrayidx6, align 4
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%add7 = fadd fast float %2, 1.000000e+00
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%arrayidx10 = getelementptr inbounds float, float* %B, i64 %indvars.iv.next
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store float %add7, float* %arrayidx10, align 4
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%exitcond = icmp ne i64 %indvars.iv.next, %wide.trip.count
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br i1 %exitcond, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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