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Unified Diff: test/NaCl/Bitcode/pnacl-bcdis/forwarddcl.ll

Issue 939073008: Rebased PNaCl localmods in LLVM to 223109 (Closed)
Patch Set: undo localmod Created 5 years, 10 months ago
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Index: test/NaCl/Bitcode/pnacl-bcdis/forwarddcl.ll
diff --git a/test/NaCl/Bitcode/pnacl-bcdis/forwarddcl.ll b/test/NaCl/Bitcode/pnacl-bcdis/forwarddcl.ll
new file mode 100644
index 0000000000000000000000000000000000000000..23f425a9d1eecd7454d1e8dcc49a50bec59bafb4
--- /dev/null
+++ b/test/NaCl/Bitcode/pnacl-bcdis/forwarddcl.ll
@@ -0,0 +1,94 @@
+; Test if forward declare works.
+
+; RUN: llvm-as < %s | pnacl-freeze | pnacl-bccompress --remove-abbreviations \
+; RUN: | pnacl-bcdis | FileCheck %s
+
+; Tests case where forward declare will be added because of loop carried
+; dependency.
+define void @LoopCarriedDep() {
+
+; CHECK: {{.*}}| 1: <65535, 11, 2> | constants { // BlockID = 11
+; CHECK-NEXT: {{.*}}| 3: <1, 0> | i32:
+; CHECK-NEXT: {{.*}}| 3: <4, 2> | %c0 = i32 1;
+; CHECK-NEXT: {{.*}}| 3: <4, 4> | %c1 = i32 2;
+; CHECK-NEXT: {{.*}}| 0: <65534> | }
+
+b0:
+ %v0 = add i32 1, 2
+ br label %b1
+
+; CHECK-NEXT: | | %b0:
+; CHECK-NEXT: {{.*}}| 3: <2, 2, 1, 0> | %v0 = add i32 %c0, %c1;
+; CHECK-NEXT: {{.*}}| 3: <11, 1> | br label %b1;
+
+b1:
+ %v1 = phi i32 [%v0, %b0], [%v2, %b1]
+ %v2 = add i32 %v1, 1
+ br label %b1
+
+; CHECK-NEXT: | | %b1:
+; CHECK-NEXT: {{.*}}| 3: <43, 6, 0> | declare i32 %v2;
+; CHECK-NEXT: {{.*}}| 3: <16, 0, 2, 0, 3, 1> | %v1 = phi i32 [%v0, %b0],
+; CHECK-NEXT: | | [%v2, %b1];
+; CHECK-NEXT: {{.*}}| 3: <2, 1, 4, 0> | %v2 = add i32 %v1, %c0;
+; CHECK-NEXT: {{.*}}| 3: <11, 1> | br label %b1;
+
+}
+
+; Test case where we backward branch.
+define void @BackBranch(i32 %p0) {
+ br label %b4
+
+; CHECK: | | %b0:
+; CHECK-NEXT: {{.*}}| 3: <11, 4> | br label %b4;
+
+b1:
+ %v0 = add i32 %p0, %v3
+ br label %b6
+
+; CHECK-NEXT: | | %b1:
+; CHECK-NEXT: {{.*}}| 3: <43, 7, 0> | declare i32 %v3;
+; CHECK-NEXT: {{.*}}| 3: <2, 2, 4294967293, 0> | %v0 = add i32 %p0, %v3;
+; CHECK-NEXT: {{.*}}| 3: <11, 6> | br label %b6;
+
+b2:
+ %v1 = add i32 %p0, %v4
+ br label %b6
+
+; CHECK-NEXT: | | %b2:
+; CHECK-NEXT: {{.*}}| 3: <43, 8, 0> | declare i32 %v4;
+; CHECK-NEXT: {{.*}}| 3: <2, 3, 4294967293, 0> | %v1 = add i32 %p0, %v4;
+; CHECK-NEXT: {{.*}}| 3: <11, 6> | br label %b6;
+
+b3:
+ %v2 = add i32 %p0, %v3 ; No forward declare, already done!
+ br label %b6
+
+; CHECK-NEXT: | | %b3:
+; CHECK-NEXT: {{.*}}| 3: <2, 4, 4294967295, 0> | %v2 = add i32 %p0, %v3;
+; CHECK-NEXT: {{.*}}| 3: <11, 6> | br label %b6;
+
+b4:
+ %v3 = add i32 %p0, %p0
+ br i1 1, label %b1, label %b5
+
+; CHECK-NEXT: | | %b4:
+; CHECK-NEXT: {{.*}}| 3: <2, 5, 5, 0> | %v3 = add i32 %p0, %p0;
+; CHECK-NEXT: {{.*}}| 3: <11, 1, 5, 5> | br i1 %c0, label %b1, label %b5;
+
+b5:
+ %v4 = add i32 %v3, %p0
+ br i1 1, label %b2, label %b3
+
+; CHECK-NEXT: | | %b5:
+; CHECK-NEXT: {{.*}}| 3: <2, 1, 6, 0> | %v4 = add i32 %v3, %p0;
+; CHECK-NEXT: {{.*}}| 3: <11, 2, 3, 6> | br i1 %c0, label %b2, label %b3;
+
+b6:
+ ret void
+
+; CHECK-NEXT: | | %b6:
+; CHECK-NEXT: {{.*}}| 3: <10> | ret void;
+
+}
+
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