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llvm-6502/test/CodeGen/PowerPC/empty-functions.ll

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Consider this function: void foo() { __builtin_unreachable(); } It will output the following on Darwin X86: _func1: Leh_func_begin0: pushq %rbp Ltmp0: movq %rsp, %rbp Ltmp1: Leh_func_end0: This prolog adds a new Call Frame Information (CFI) row to the FDE with an address that is not within the address range of the code it describes -- part is equal to the end of the function -- and therefore results in an invalid EH frame. If we emit a nop in this situation, then the CFI row is now within the address range. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108568 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 22:51:10 +00:00
; RUN: llc < %s -mtriple=powerpc-apple-darwin | FileCheck -check-prefix=CHECK-NO-FP %s
; RUN: llc < %s -mtriple=powerpc-apple-darwin -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
Provide an implementation of getNoopForMachoTarget for PPC, otherwise empty functions will assert in the MC object writer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215238 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-08 19:13:23 +00:00
; RUN: llc < %s -mtriple=powerpc-netbsd -disable-fp-elim | FileCheck -check-prefix=CHECK-FP %s
Consider this function: void foo() { __builtin_unreachable(); } It will output the following on Darwin X86: _func1: Leh_func_begin0: pushq %rbp Ltmp0: movq %rsp, %rbp Ltmp1: Leh_func_end0: This prolog adds a new Call Frame Information (CFI) row to the FDE with an address that is not within the address range of the code it describes -- part is equal to the end of the function -- and therefore results in an invalid EH frame. If we emit a nop in this situation, then the CFI row is now within the address range. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108568 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 22:51:10 +00:00
define void @func() {
entry:
unreachable
}
; CHECK-NO-FP: _func:
; CHECK-NO-FP: nop
Provide an implementation of getNoopForMachoTarget for PPC, otherwise empty functions will assert in the MC object writer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215238 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-08 19:13:23 +00:00
; CHECK-FP: {{_?}}func:
; CHECK-FP: nop {{[;#]}} avoids zero-length function
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