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(parent: 299918a) | patch
ARM: r12 is callee-saved for interrupt handlers
authorOliver Stannard <oliver.stannard@arm.com>
Mon, 10 Feb 2014 14:24:23 +0000 (14:24 +0000)
committerOliver Stannard <oliver.stannard@arm.com>
Mon, 10 Feb 2014 14:24:23 +0000 (14:24 +0000)
commitdbd5c285b8a878ef068b6fb05f1981cf4878f0db
treee2e04bd0f1cbedcddfdb1e5e534095626a673006tree | snapshot
parent299918ad4813ded5eb717c0c4898eb67205d880bcommit | diff
ARM: r12 is callee-saved for interrupt handlers

For A- and R-class processors, r12 is not normally callee-saved, but is for
interrupt handlers. See AAPCS, 5.3.1.1, "Use of IP by the linker".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201089 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/ARM/ARMBaseRegisterInfo.h diff | blob | history
test/CodeGen/ARM/interrupt-attr.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors