[EarlyCSE] DSE of atomic unordered stores

[oota-llvm.git] / test / Transforms / LoopSimplify / single-backedge.ll

diff --git a/test/Transforms/LoopSimplify/single-backedge.ll b/test/Transforms/LoopSimplify/single-backedge.ll
index 8391048eed220f713861aa6659721a483a73e1bb..6f3db8fb14fca6f25877f0d2c9ffff500103a7c7 100644 (file)
--- a/test/Transforms/LoopSimplify/single-backedge.ll
+++ b/test/Transforms/LoopSimplify/single-backedge.ll
@@ -1,20 +1,39 @@
-; The loop canonicalization pass should guarantee that there is one backedge 
-; for all loops.  This allows the -indvars pass to recognize the %IV 
+; The loop canonicalization pass should guarantee that there is one backedge
+; for all loops.  This allows the -indvars pass to recognize the %IV
 ; induction variable in this testcase.
 
-; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep indvar
+; RUN: opt < %s -indvars -S | FileCheck %s
+; CHECK: Loop.backedge:
+; CHECK-NOT: br
+; CHECK: br label %Loop, !dbg [[BACKEDGE_LOC:![0-9]+]]
+
+; CHECK: [[BACKEDGE_LOC]] = !DILocation(line: 101, column: 1, scope: !{{.*}})
 
 define i32 @test(i1 %C) {
 ; <label>:0
-       br label %Loop
-Loop:          ; preds = %BE2, %BE1, %0
-       %IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ]         ; <i32> [#uses=2]
-       store i32 %IV, i32* null
-       %IV2 = add i32 %IV, 2           ; <i32> [#uses=2]
-       br i1 %C, label %BE1, label %BE2
-BE1:           ; preds = %Loop
-       br label %Loop
-BE2:           ; preds = %Loop
-       br label %Loop
+  br label %Loop, !dbg !6
+Loop: ; preds = %BE2, %BE1, %0
+  %IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2]
+  store i32 %IV, i32* null, !dbg !7
+  %IV2 = add i32 %IV, 2, !dbg !8 ; <i32> [#uses=2]
+  br i1 %C, label %BE1, label %BE2, !dbg !9
+BE1:  ; preds = %Loop
+  br label %Loop, !dbg !10
+BE2:    ; preds = %n br label %Loop
+  br label %Loop, !dbg !11
 }
 
+!llvm.module.flags = !{!0, !1}
+!0 = !{i32 2, !"Dwarf Version", i32 4}
+!1 = !{i32 2, !"Debug Info Version", i32 3}
+
+!2 = !{}
+!3 = !DISubroutineType(types: !2)
+!4 = !DIFile(filename: "atomic.cpp", directory: "/tmp")
+!5 = distinct !DISubprogram(name: "test", scope: !4, file: !4, line: 99, type: !3, isLocal: false, isDefinition: true, scopeLine: 100, flags: DIFlagPrototyped, isOptimized: false, variables: !2)
+!6 = !DILocation(line: 100, column: 1, scope: !5)
+!7 = !DILocation(line: 101, column: 1, scope: !5)
+!8 = !DILocation(line: 102, column: 1, scope: !5)
+!9 = !DILocation(line: 103, column: 1, scope: !5)
+!10 = !DILocation(line: 104, column: 1, scope: !5)
+!11 = !DILocation(line: 105, column: 1, scope: !5)