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| author | Vlad Tsyrklevich <vlad@tsyrklevich.net> | 2018-08-01 17:44:37 +0000 |
|---|---|---|
| committer | Vlad Tsyrklevich <vlad@tsyrklevich.net> | 2018-08-01 17:44:37 +0000 |
| commit | ab016e00ecd33b2d873bac4b77c59be0c3e12db3 (patch) | |
| tree | d36aea233f1113b671b17f840f2d5d777c0150a4 /llvm/lib/Target/X86/X86FastISel.cpp | |
| parent | 931ebe3be185b00a10588e8f36787df7378a0eaf (diff) | |
| download | bcm5719-llvm-ab016e00ecd33b2d873bac4b77c59be0c3e12db3.tar.gz bcm5719-llvm-ab016e00ecd33b2d873bac4b77c59be0c3e12db3.zip | |
[X86] FastISel fall back on !absolute_symbol GVs
Summary:
D25878, which added support for !absolute_symbol for normal X86 ISel,
did not add support for materializing references to absolute symbols for
X86 FastISel. This causes build failures because FastISel generates
PC-relative relocations for absolute symbols. Fall back to normal ISel
for references to !absolute_symbol GVs. Fix for PR38200.
Reviewers: pcc, craig.topper
Reviewed By: pcc
Subscribers: hiraditya, llvm-commits, kcc
Differential Revision: https://reviews.llvm.org/D50116
llvm-svn: 338599
Diffstat (limited to 'llvm/lib/Target/X86/X86FastISel.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86FastISel.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86FastISel.cpp b/llvm/lib/Target/X86/X86FastISel.cpp index 35a15577fe0..d082b42eefa 100644 --- a/llvm/lib/Target/X86/X86FastISel.cpp +++ b/llvm/lib/Target/X86/X86FastISel.cpp @@ -738,6 +738,10 @@ bool X86FastISel::handleConstantAddresses(const Value *V, X86AddressMode &AM) { if (GV->isThreadLocal()) return false; + // Can't handle !absolute_symbol references yet. + if (GV->isAbsoluteSymbolRef()) + return false; + // RIP-relative addresses can't have additional register operands, so if // we've already folded stuff into the addressing mode, just force the // global value into its own register, which we can use as the basereg. |
