diff options
Diffstat (limited to 'test/CodeGen/X86/jump_table_align.ll')
-rw-r--r-- | test/CodeGen/X86/jump_table_align.ll | 29 |
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 0000000..6ad48d1 --- /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) |