move this out of Codegen/Generic, because it requires the ARM backend to be
linked into llc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36919 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/ARM/2007-05-07-tailmerge-1.ll b/test/CodeGen/ARM/2007-05-07-tailmerge-1.ll
new file mode 100644
index 0000000..15efd60
--- /dev/null
+++ b/test/CodeGen/ARM/2007-05-07-tailmerge-1.ll
@@ -0,0 +1,65 @@
+; RUN: llvm-as < %s | llc -march=arm -enable-tail-merge | grep bl.*baz | wc -l | grep 1
+; RUN: llvm-as < %s | llc -march=arm -enable-tail-merge | grep bl.*quux | wc -l | grep 1
+; Check that calls to baz and quux are tail-merged.
+
+; ModuleID = 'tail.c'
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64"
+target triple = "i686-apple-darwin8"
+
+define i32 @f(i32 %i, i32 %q) {
+entry:
+ %i_addr = alloca i32 ; <i32*> [#uses=2]
+ %q_addr = alloca i32 ; <i32*> [#uses=2]
+ %retval = alloca i32, align 4 ; <i32*> [#uses=1]
+ "alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
+ store i32 %i, i32* %i_addr
+ store i32 %q, i32* %q_addr
+ %tmp = load i32* %i_addr ; <i32> [#uses=1]
+ %tmp1 = icmp ne i32 %tmp, 0 ; <i1> [#uses=1]
+ %tmp12 = zext i1 %tmp1 to i8 ; <i8> [#uses=1]
+ %toBool = icmp ne i8 %tmp12, 0 ; <i1> [#uses=1]
+ br i1 %toBool, label %cond_true, label %cond_false
+
+cond_true: ; preds = %entry
+ %tmp3 = call i32 (...)* @bar( ) ; <i32> [#uses=0]
+ %tmp4 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0]
+ br label %cond_next
+
+cond_false: ; preds = %entry
+ %tmp5 = call i32 (...)* @foo( ) ; <i32> [#uses=0]
+ %tmp6 = call i32 (...)* @baz( i32 5, i32 6 ) ; <i32> [#uses=0]
+ br label %cond_next
+
+cond_next: ; preds = %cond_false, %cond_true
+ %tmp7 = load i32* %q_addr ; <i32> [#uses=1]
+ %tmp8 = icmp ne i32 %tmp7, 0 ; <i1> [#uses=1]
+ %tmp89 = zext i1 %tmp8 to i8 ; <i8> [#uses=1]
+ %toBool10 = icmp ne i8 %tmp89, 0 ; <i1> [#uses=1]
+ br i1 %toBool10, label %cond_true11, label %cond_false15
+
+cond_true11: ; preds = %cond_next
+ %tmp13 = call i32 (...)* @foo( ) ; <i32> [#uses=0]
+ %tmp14 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0]
+ br label %cond_next18
+
+cond_false15: ; preds = %cond_next
+ %tmp16 = call i32 (...)* @bar( ) ; <i32> [#uses=0]
+ %tmp17 = call i32 (...)* @quux( i32 3, i32 4 ) ; <i32> [#uses=0]
+ br label %cond_next18
+
+cond_next18: ; preds = %cond_false15, %cond_true11
+ %tmp19 = call i32 (...)* @bar( ) ; <i32> [#uses=0]
+ br label %return
+
+return: ; preds = %cond_next18
+ %retval20 = load i32* %retval ; <i32> [#uses=1]
+ ret i32 %retval20
+}
+
+declare i32 @bar(...)
+
+declare i32 @baz(...)
+
+declare i32 @foo(...)
+
+declare i32 @quux(...)