llvm: Add support for "-fno-delete-null-pointer-checks"

[android-x86/external-llvm.git] / test / Transforms / SimplifyCFG / trapping-load-unreachable.ll

diff --git a/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll
index 5881367..b074393 100644 (file)
--- a/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll
+++ b/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll
@@ -21,17 +21,44 @@ return:         ; preds = %entry
 ; CHECK: load volatile
 }
 
+define void @test1_no_null_opt(i32 %x) nounwind #0 {
+entry:
+        %0 = icmp eq i32 %x, 0          ; <i1> [#uses=1]
+        br i1 %0, label %bb, label %return
+
+bb:             ; preds = %entry
+        %1 = load volatile i32, i32* null
+        unreachable
+
+        br label %return
+return:         ; preds = %entry
+        ret void
+; CHECK-LABEL: @test1_no_null_opt(
+; CHECK: load volatile
+; CHECK: unreachable
+}
+
 ; rdar://7958343
 define void @test2() nounwind {
 entry:
         store i32 4,i32* null
         ret void
-        
+
 ; CHECK-LABEL: @test2(
 ; CHECK: call void @llvm.trap
 ; CHECK: unreachable
 }
 
+define void @test2_no_null_opt() nounwind #0 {
+entry:
+        store i32 4,i32* null
+        ret void
+; CHECK-LABEL: @test2_no_null_opt(
+; CHECK: store i32 4, i32* null
+; CHECK-NOT: call void @llvm.trap
+; CHECK: ret
+}
+
 ; PR7369
 define void @test3() nounwind {
 entry:
@@ -43,6 +70,16 @@ entry:
 ; CHECK: ret
 }
 
+define void @test3_no_null_opt() nounwind #0 {
+entry:
+        store volatile i32 4, i32* null
+        ret void
+
+; CHECK-LABEL: @test3_no_null_opt(
+; CHECK: store volatile i32 4, i32* null
+; CHECK: ret
+}
+
 ; Check store before unreachable.
 define void @test4(i1 %C, i32* %P) {
 ; CHECK-LABEL: @test4(
@@ -85,3 +122,4 @@ F:
   ret void
 }
 
+attributes #0 = { "null-pointer-is-valid"="true" }