diff options
Diffstat (limited to 'test/CodeGen/X86/jump_table_alias.ll')
| -rw-r--r-- | test/CodeGen/X86/jump_table_alias.ll | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/test/CodeGen/X86/jump_table_alias.ll b/test/CodeGen/X86/jump_table_alias.ll new file mode 100644 index 0000000..f3691fd --- /dev/null +++ b/test/CodeGen/X86/jump_table_alias.ll @@ -0,0 +1,33 @@ +; RUN: llc <%s -jump-table-type=single | FileCheck %s +target triple = "x86_64-unknown-linux-gnu" +define i32 @f() unnamed_addr jumptable { +entry: + ret i32 0 +} + +@i = alias internal i32 ()* @f +@j = alias i32 ()* @f + +define i32 @main(i32 %argc, i8** %argv) { + %temp = alloca i32 ()*, align 8 + store i32 ()* @i, i32()** %temp, align 8 +; CHECK: movq $__llvm_jump_instr_table_0_1 + %1 = load i32 ()** %temp, align 8 +; CHECK: movl $__llvm_jump_instr_table_0_1 + %2 = call i32 ()* %1() + %3 = call i32 ()* @i() +; CHECK: callq i + %4 = call i32 ()* @j() +; CHECK: callq j + ret i32 %3 +} + +; There should only be one table, even though there are two GlobalAliases, +; because they both alias the same value. + +; CHECK: .globl __llvm_jump_instr_table_0_1 +; CHECK: .align 8, 0x90 +; CHECK: .type __llvm_jump_instr_table_0_1,@function +; CHECK: __llvm_jump_instr_table_0_1: +; CHECK: jmp f@PLT + |