GVN: If a branch has two identical successors, we cannot declare either dead.

[oota-llvm.git] / test / Transforms / GVN / phi-translate.ll

diff --git a/test/Transforms/GVN/phi-translate.ll b/test/Transforms/GVN/phi-translate.ll
index 7fe95c6bb4818a1b97b4e54953ca52430cc9d0fa..9e37b882f2223c02e7d3ae14aa5729cbc13dc3f5 100644 (file)
--- a/test/Transforms/GVN/phi-translate.ll
+++ b/test/Transforms/GVN/phi-translate.ll
@@ -4,28 +4,49 @@ target datalayout = "e-p:64:64:64"
 
 ; CHECK-LABEL: @foo(
 ; CHECK: entry.end_crit_edge:
-; CHECK:   %n.pre = load i32* %q.phi.trans.insert
+; CHECK:   %j.phi.trans.insert = sext i32 %x to i64, !dbg [[J_LOC:![0-9]+]]
+; CHECK:   %q.phi.trans.insert = getelementptr {{.*}}, !dbg [[Q_LOC:![0-9]+]]
+; CHECK:   %n.pre = load i32, i32* %q.phi.trans.insert, !dbg [[N_LOC:![0-9]+]]
 ; CHECK: then:
 ; CHECK:   store i32 %z
 ; CHECK: end:
-; CHECK:   %n = phi i32 [ %n.pre, %entry.end_crit_edge ], [ %z, %then ]
+; CHECK:   %n = phi i32 [ %n.pre, %entry.end_crit_edge ], [ %z, %then ], !dbg [[N_LOC]]
 ; CHECK:   ret i32 %n
 
+; CHECK-DAG: [[J_LOC]] = !DILocation(line: 45, column: 1, scope: !{{.*}})
+; CHECK-DAG: [[Q_LOC]] = !DILocation(line: 46, column: 1, scope: !{{.*}})
+; CHECK-DAG: [[N_LOC]] = !DILocation(line: 47, column: 1, scope: !{{.*}})
+
 @G = external global [100 x i32]
 define i32 @foo(i32 %x, i32 %z) {
 entry:
-  %tobool = icmp eq i32 %z, 0
-  br i1 %tobool, label %end, label %then
+  %tobool = icmp eq i32 %z, 0, !dbg !7
+  br i1 %tobool, label %end, label %then, !dbg !7
 
 then:
-  %i = sext i32 %x to i64
-  %p = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %i
-  store i32 %z, i32* %p
-  br label %end
+  %i = sext i32 %x to i64, !dbg !8
+  %p = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %i, !dbg !8
+  store i32 %z, i32* %p, !dbg !8
+  br label %end, !dbg !8
 
 end:
-  %j = sext i32 %x to i64
-  %q = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %j
-  %n = load i32* %q
-  ret i32 %n
+  %j = sext i32 %x to i64, !dbg !9
+  %q = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %j, !dbg !10
+  %n = load i32, i32* %q, !dbg !11
+  ret i32 %n, !dbg !11
 }
+
+!llvm.module.flags = !{!0, !1, !2}
+!0 = !{i32 2, !"Dwarf Version", i32 4}
+!1 = !{i32 2, !"Debug Info Version", i32 3}
+!2 = !{i32 1, !"PIC Level", i32 2}
+
+!3 = !{}
+!4 = !DISubroutineType(types: !3)
+!5 = !DIFile(filename: "a.cc", directory: "/tmp")
+!6 = !DISubprogram(name: "foo", scope: !5, file: !5, line: 42, type: !4, isLocal: false, isDefinition: true, scopeLine: 43, flags: DIFlagPrototyped, isOptimized: false, function: i32 (i32, i32)* @foo, variables: !3)
+!7 = !DILocation(line: 43, column: 1, scope: !6)
+!8 = !DILocation(line: 44, column: 1, scope: !6)
+!9 = !DILocation(line: 45, column: 1, scope: !6)
+!10 = !DILocation(line: 46, column: 1, scope: !6)
+!11 = !DILocation(line: 47, column: 1, scope: !6)