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llvm-project/llvm/test/Verifier/jumptable.ll

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Add a new attribute called 'jumptable' that creates jump-instruction tables for functions marked with this attribute. It includes a pass that rewrites all indirect calls to jumptable functions to pass through these tables. This also adds backend support for generating the jump-instruction tables on ARM and X86. Note that since the jumptable attribute creates a second function pointer for a function, any function marked with jumptable must also be marked with unnamed_addr. llvm-svn: 210280
2014-06-06 03:29:43 +08:00
; RUN: not llc <%s 2>&1 | FileCheck %s
define i32 @f() jumptable {
ret i32 0
}
; CHECK: Attribute 'jumptable' requires 'unnamed_addr'
; CHECK: i32 ()* @f
; CHECK: LLVM ERROR: Broken function found, compilation aborted!