clean up DSE tests, removing some poorly reduced and useless old test,

[oota-llvm.git] / test / Transforms / DeadStoreElimination / free.ll

diff --git a/test/Transforms/DeadStoreElimination/free.ll b/test/Transforms/DeadStoreElimination/free.ll
index cc0a826668190d249531c53c5566e6e824a326ed..3c980ccac6b443d8806a3a0064a21f3103a152f6 100644 (file)
--- a/test/Transforms/DeadStoreElimination/free.ll
+++ b/test/Transforms/DeadStoreElimination/free.ll
@@ -1,5 +1,11 @@
-; RUN: opt %s -dse | llvm-dis | not grep DEAD
+; RUN: opt < %s -basicaa -dse -S | FileCheck %s
 
+target datalayout = "e-p:64:64:64"
+
+; CHECK: @test
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: @free
+; CHECK-NEXT: ret void
 define void @test(i32* %Q, i32* %P) {
         %DEAD = load i32* %Q            ; <i32> [#uses=1]
         store i32 %DEAD, i32* %P
@@ -7,9 +13,28 @@ define void @test(i32* %Q, i32* %P) {
         ret void
 }
 
+; CHECK: @test2
+; CHECK-NEXT: bitcast
+; CHECK-NEXT: @free
+; CHECK-NEXT: ret void
 define void @test2({i32, i32}* %P) {
        %Q = getelementptr {i32, i32} *%P, i32 0, i32 1
        store i32 4, i32* %Q
        free {i32,i32}* %P
        ret void
 }
+
+; CHECK: @test4
+; CHECK-NOT: store
+; CHECK: ret void
+define void @test4() {
+  %m = call i8* @malloc(i64 24)
+  store i8 0, i8* %m
+  %m1 = getelementptr i8* %m, i64 1
+  store i8 1, i8* %m1
+  call void @free(i8* %m)
+  ret void
+}
+
+declare void @free(i8*)
+declare i8* @malloc(i64)