vendor/llvm/llvm-release_360-r226102

1 files changed, 29 insertions, 0 deletions

diff --git a/test/CodeGen/X86/jump_table_align.ll b/test/CodeGen/X86/jump_table_align.ll
new file mode 100644
index 000000000000..6ad48d1f54f7
--- /dev/null
+++ b/test/CodeGen/X86/jump_table_align.ll
@@ -0,0 +1,29 @@
+; RUN: llc -filetype=obj <%s -jump-table-type=single -o %t1
+; RUN: llvm-objdump -triple=x86_64-unknown-linux-gnu -d %t1 | FileCheck %s
+target triple = "x86_64-unknown-linux-gnu"
+define i32 @f() unnamed_addr jumptable {
+  ret i32 0
+}
+
+define i32 @g(i8* %a) unnamed_addr jumptable {
+  ret i32 0
+}
+
+define void @h(void ()* %func) unnamed_addr jumptable {
+  ret void
+}
+
+define i32 @main() {
+  %g = alloca i32 (...)*, align 8
+  store i32 (...)* bitcast (i32 ()* @f to i32 (...)*), i32 (...)** %g, align 8
+  %1 = load i32 (...)** %g, align 8
+  %call = call i32 (...)* %1()
+  call void (void ()*)* @h(void ()* bitcast (void (void ()*)* @h to void ()*))
+  %a = call i32 (i32*)* bitcast (i32 (i8*)* @g to i32(i32*)*)(i32* null)
+  ret i32 %a
+}
+
+; Make sure that the padding from getJumpInstrTableEntryBound is right.
+; CHECK: __llvm_jump_instr_table_0_1:
+; CHECK-NEXT: e9 00 00 00 00                                  jmp     0
+; CHECK-NEXT: 0f 1f 00                                        nopl    (%rax)