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| author | Petr Hosek <phosek@chromium.org> | 2017-04-07 20:41:58 +0000 |
|---|---|---|
| committer | Petr Hosek <phosek@chromium.org> | 2017-04-07 20:41:58 +0000 |
| commit | c3a9e6db3811c0a459137430c121210e83541c93 (patch) | |
| tree | ad47c1a52671903fc342d2e3a725ed7239ab6aec /llvm/lib | |
| parent | df82d93562591fd948d15669703610b62becaffe (diff) | |
| download | bcm5719-llvm-c3a9e6db3811c0a459137430c121210e83541c93.tar.gz bcm5719-llvm-c3a9e6db3811c0a459137430c121210e83541c93.zip | |
[AArch64] Allow global register asm("x18") or asm("w18") under -ffixed-x18
When using -ffixed-x18, the x18 (or w18) register can safely be used
with the "global register variable" GCC extension, but the backend
fails to recognize it.
Patch by Roland McGrath.
Differential Revision: https://reviews.llvm.org/D31793
llvm-svn: 299799
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64ISelLowering.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp index ea184d55e44..7dd62f78a8f 100644 --- a/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp +++ b/llvm/lib/Target/AArch64/AArch64ISelLowering.cpp @@ -4510,7 +4510,12 @@ unsigned AArch64TargetLowering::getRegisterByName(const char* RegName, EVT VT, SelectionDAG &DAG) const { unsigned Reg = StringSwitch<unsigned>(RegName) .Case("sp", AArch64::SP) + .Case("x18", AArch64::X18) + .Case("w18", AArch64::W18) .Default(0); + if ((Reg == AArch64::X18 || Reg == AArch64::W18) && + !Subtarget->isX18Reserved()) + Reg = 0; if (Reg) return Reg; report_fatal_error(Twine("Invalid register name \"" |
