Merge several tests into switch.c.

llvm-svn: 100235

clang/test/CodeGen/rdr-6098585-default-after-caserange.c

@@ -1,18 +0,0 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis > %t
-// RUN: grep "ret i32" %t | count 1
-// RUN: grep "ret i32 10" %t | count 1
-
-// Ensure that default after a case range is not ignored.
-
-static int f1(unsigned x) {
-  switch(x) {
-  case 10 ... 0xFFFFFFFF:
-    return 0;
-  default:
-    return 10;
-  }
-}
-
-int g() {
-  return f1(2);
-}

clang/test/CodeGen/rdr-6098585-default-fallthrough-to-caserange.c

@@ -1,20 +0,0 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis > %t
-// RUN: grep "ret i32 10" %t
-
-// Ensure that this doesn't compile to infinite loop in g() due to
-// miscompilation of fallthrough from default to a (tested) case
-// range.
-
-static int f0(unsigned x) {
-  switch(x) {
-  default:
-    x += 1;
-  case 10 ... 0xFFFFFFFF:
-    return 0;
-  }
-}
-
-int g() {
-  f0(1);
-  return 10;
-}

clang/test/CodeGen/rdr-6098585-empty-case-range.c

@@ -1,23 +0,0 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis > %t
-// RUN: grep "ret i32" %t | count 2
-// RUN: grep "ret i32 3" %t | count 2
-
-// This generated incorrect code because of poor switch chaining.
-int f1(int x) {
-  switch(x) {
-  default:
-    return 3;
-  case 10 ... 0xFFFFFFFF:
-    return 0;
-  }
-}
-
-// This just asserted because of the way case ranges were calculated.
-int f2(int x) {
-  switch (x) {
-  default:
-    return 3;
-  case 10 ... -1: 
-    return 0;
-  }
-}

clang/test/CodeGen/rdr-6098585-fallthrough-to-empty-range.c

@@ -1,15 +0,0 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis > %t
-// RUN: grep "ret i32 %" %t
-
-// Make sure return is not constant (if empty range is skipped or miscompiled)
-
-int f0(unsigned x) {
-  switch(x) {
-  case 2:
-    // fallthrough empty range
-  case 10 ... 9:
-    return 10;
-  default:
-    return 0;
-  }
-}

clang/test/CodeGen/rdr-6098585-unsigned-caserange.c

@@ -1,12 +0,0 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis > %t
-// RUN: grep "ret i32" %t | count 1
-// RUN: grep "ret i32 3" %t | count 1
-
-int f2(unsigned x) {
-  switch(x) {
-  default:
-    return 3;
-  case 0xFFFFFFFF ... 1: // This range should be empty because x is unsigned.
-    return 0;
-  }
-}

clang/test/CodeGen/switch.c

@@ -100,3 +100,97 @@ void foo7(){
     }
 }
 
+
+// CHECK: define i32 @f8(
+// CHECK: ret i32 3
+// CHECK: }
+int f8(unsigned x) {
+  switch(x) {
+  default:
+    return 3;
+  case 0xFFFFFFFF ... 1: // This range should be empty because x is unsigned.
+    return 0;
+  }
+}
+
+// Ensure that default after a case range is not ignored.
+//
+// CHECK: define i32 @f9()
+// CHECK: ret i32 10
+// CHECK: }
+static int f9_0(unsigned x) {
+  switch(x) {
+  case 10 ... 0xFFFFFFFF:
+    return 0;
+  default:
+    return 10;
+  }
+}
+int f9() {
+  return f9_0(2);
+}
+
+// Ensure that this doesn't compile to infinite loop in g() due to
+// miscompilation of fallthrough from default to a (tested) case
+// range.
+//
+// CHECK: define i32 @f10()
+// CHECK: ret i32 10
+// CHECK: }
+static int f10_0(unsigned x) {
+  switch(x) {
+  default:
+    x += 1;
+  case 10 ... 0xFFFFFFFF:
+    return 0;
+  }
+}
+
+int f10() {
+  f10_0(1);
+  return 10;
+}
+
+// This generated incorrect code because of poor switch chaining.
+//
+// CHECK: define i32 @f11(
+// CHECK: ret i32 3
+// CHECK: }
+int f11(int x) {
+  switch(x) {
+  default:
+    return 3;
+  case 10 ... 0xFFFFFFFF:
+    return 0;
+  }
+}
+
+// This just asserted because of the way case ranges were calculated.
+//
+// CHECK: define i32 @f12(
+// CHECK: ret i32 3
+// CHECK: }
+int f12(int x) {
+  switch (x) {
+  default:
+    return 3;
+  case 10 ... -1: 
+    return 0;
+  }
+}
+
+// Make sure return is not constant (if empty range is skipped or miscompiled)
+//
+// CHECK: define i32 @f13(
+// CHECK: ret i32 %
+// CHECK: }
+int f13(unsigned x) {
+  switch(x) {
+  case 2:
+    // fallthrough empty range
+  case 10 ... 9:
+    return 10;
+  default:
+    return 0;
+  }
+}