https://bugs.llvm.org/show_bug.cgi?id=33030
Bug ID: 33030
Summary: ARM: Builtins should use AAPCS ABI for non-windows
platforms
Product: compiler-rt
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: compiler-rt
Assignee: unassignedb...@nondot.org
Reporter: manojgu...@google.com
CC: echri...@gmail.com, lloz...@chromium.org,
llvm-bugs@lists.llvm.org, renato.go...@linaro.org,
weimi...@codeaurora.org
COMPILER_RT_ABI is incorrectly defined in compiler-rt trunk.
For ARM, COMPILER_RT_ABI used to be defined as aapcs unconditionally.
#define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
However, r298974 changed the following define conditional on HF:
# ifdef COMPILER_RT_ARMHF_TARGET
# define COMPILER_RT_ABI
# else
# define COMPILER_RT_ABI __attribute__((pcs("aapcs")))
# endif
This does not work on Non-Windows platforms since llvm always expects AAPCS ABI
for the builtins.
E.g. d2ulz is expected to have AAPCS calling convention.
$ grep -r d2ulz llvm/lib/Target/ARM/
llvm/lib/Target/ARM/ARMISelLowering.cpp: { RTLIB::FPTOUINT_F64_I64,
"__aeabi_d2ulz", CallingConv::ARM_AAPCS, ISD::SETCC_INVALID },
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