1 files changed, 57 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-gc-intrinsics.ll b/test/CodeGen/X86/fast-isel-gc-intrinsics.ll
new file mode 100644
index 0000000000000..bf08ad01d7d8c
--- /dev/null
+++ b/test/CodeGen/X86/fast-isel-gc-intrinsics.ll
@@ -0,0 +1,57 @@
+; RUN: llc < %s -fast-isel
+
+target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-pc-linux-gnu"
+; Dont crash with gc intrinsics.
+
+; gcrelocate call should not be an LLVM Machine Block by itself.
+define i8 addrspace(1)* @test_gcrelocate(i8 addrspace(1)* %v) gc "statepoint-example" {
+entry:
+  %tok = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
+  %vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok,  i32 7, i32 7)
+  ret i8 addrspace(1)* %vnew
+}
+
+; gcresult calls are fine in their own blocks.
+define i1 @test_gcresult() gc "statepoint-example" {
+entry:
+  %safepoint_token = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0)
+  %call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
+  ret i1 %call1
+}
+
+; we are okay here because we see the gcrelocate and avoid generating their own
+; block.
+define i1 @test_gcresult_gcrelocate(i8 addrspace(1)* %v) gc "statepoint-example" {
+entry:
+  %safepoint_token = tail call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
+  %call1 = call zeroext i1 @llvm.experimental.gc.result.i1(token %safepoint_token)
+  %vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %safepoint_token,  i32 7, i32 7)
+  ret i1 %call1
+}
+
+define i8 addrspace(1)*  @test_non_entry_block(i8 addrspace(1)* %v, i8 %val) gc "statepoint-example" {
+entry:
+ %load = load i8, i8 addrspace(1)* %v
+ %cmp = icmp eq i8 %load, %val
+ br i1 %cmp, label %func_call, label %exit
+
+func_call:
+ call void @dummy()
+ %tok = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %v)
+ %vnew = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok,  i32 7, i32 7)
+ ret i8 addrspace(1)* %vnew
+
+exit:
+  ret i8 addrspace(1)* %v
+
+}
+
+declare void @dummy()
+declare void @foo()
+
+declare zeroext i1 @return_i1()
+declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
+declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
+declare i1 @llvm.experimental.gc.result.i1(token)
+declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32)