Forgot to add this trampoline testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139229 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Transforms/InstCombine/2011-09-03-Trampoline.ll b/test/Transforms/InstCombine/2011-09-03-Trampoline.ll
new file mode 100644
index 0000000..5456e03
--- /dev/null
+++ b/test/Transforms/InstCombine/2011-09-03-Trampoline.ll
@@ -0,0 +1,87 @@
+; RUN: opt -instcombine -S < %s | FileCheck %s
+
+declare void @llvm.init.trampoline(i8*, i8*, i8*)
+declare i8* @llvm.adjust.trampoline(i8*)
+declare i32 @f(i8 * nest, i32)
+
+; Most common case
+define i32 @test0(i32 %n) {
+ %alloca = alloca [10 x i8], align 16
+ %gep = getelementptr [10 x i8]* %alloca, i32 0, i32 0
+ call void @llvm.init.trampoline(i8* %gep, i8* bitcast (i32 (i8*, i32)* @f to i8*),
+ i8* null)
+ %tramp = call i8* @llvm.adjust.trampoline(i8* %gep)
+ %function = bitcast i8* %tramp to i32(i32)*
+ %ret = call i32 %function(i32 %n)
+ ret i32 %ret
+
+; CHECK: define i32 @test0(i32 %n) {
+; CHECK: %ret = call i32 @f(i8* nest null, i32 %n)
+}
+
+define i32 @test1(i32 %n, i8* %trampmem) {
+ call void @llvm.init.trampoline(i8* %trampmem,
+ i8* bitcast (i32 (i8*, i32)* @f to i8*),
+ i8* null)
+ %tramp = call i8* @llvm.adjust.trampoline(i8* %trampmem)
+ %function = bitcast i8* %tramp to i32(i32)*
+ %ret = call i32 %function(i32 %n)
+ ret i32 %ret
+; CHECK: define i32 @test1(i32 %n, i8* %trampmem) {
+; CHECK: %ret = call i32 @f(i8* nest null, i32 %n)
+}
+
+define i32 @test2(i32 %n, i8* %trampmem) {
+ %tramp = call i8* @llvm.adjust.trampoline(i8* %trampmem)
+ %functiona = bitcast i8* %tramp to i32(i32)*
+ %ret = call i32 %functiona(i32 %n)
+ ret i32 %ret
+; CHECK: define i32 @test2(i32 %n, i8* %trampmem) {
+; CHECK: %ret = call i32 %functiona(i32 %n)
+}
+
+define i32 @test3(i32 %n, i8* %trampmem) {
+ call void @llvm.init.trampoline(i8* %trampmem,
+ i8* bitcast (i32 (i8*, i32)* @f to i8*),
+ i8* null)
+
+; CHECK: define i32 @test3(i32 %n, i8* %trampmem) {
+; CHECK: %ret0 = call i32 @f(i8* nest null, i32 %n)
+ %tramp0 = call i8* @llvm.adjust.trampoline(i8* %trampmem)
+ %function0 = bitcast i8* %tramp0 to i32(i32)*
+ %ret0 = call i32 %function0(i32 %n)
+
+ ;; Not optimized since previous call could be writing.
+ %tramp1 = call i8* @llvm.adjust.trampoline(i8* %trampmem)
+ %function1 = bitcast i8* %tramp1 to i32(i32)*
+ %ret1 = call i32 %function1(i32 %n)
+; CHECK: %ret1 = call i32 %function1(i32 %n)
+
+ ret i32 %ret1
+}
+
+define i32 @test4(i32 %n) {
+ %alloca = alloca [10 x i8], align 16
+ %gep = getelementptr [10 x i8]* %alloca, i32 0, i32 0
+ call void @llvm.init.trampoline(i8* %gep, i8* bitcast (i32 (i8*, i32)* @f to i8*),
+ i8* null)
+
+ %tramp0 = call i8* @llvm.adjust.trampoline(i8* %gep)
+ %function0 = bitcast i8* %tramp0 to i32(i32)*
+ %ret0 = call i32 %function0(i32 %n)
+
+ %tramp1 = call i8* @llvm.adjust.trampoline(i8* %gep)
+ %function1 = bitcast i8* %tramp0 to i32(i32)*
+ %ret1 = call i32 %function1(i32 %n)
+
+ %tramp2 = call i8* @llvm.adjust.trampoline(i8* %gep)
+ %function2 = bitcast i8* %tramp2 to i32(i32)*
+ %ret2 = call i32 %function2(i32 %n)
+
+ ret i32 %ret2
+
+; CHECK: define i32 @test4(i32 %n) {
+; CHECK: %ret0 = call i32 @f(i8* nest null, i32 %n)
+; CHECK: %ret1 = call i32 @f(i8* nest null, i32 %n)
+; CHECK: %ret2 = call i32 @f(i8* nest null, i32 %n)
+}
