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compiler: support little endian target when storing now

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This commit is contained in:
Sebastien Bourdeauducq 2018-12-02 17:40:34 +08:00
parent ad39c76a56
commit 2e66788c6c
1 changed files with 7 additions and 0 deletions
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7
artiq/compiler/transforms/llvm_ir_generator.py
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@ -150,6 +150,9 @@ class LLVMIRGenerator:
ll.Constant(lli64, 1)
])
assert self.llmodule.data_layout[0] in "eE"
self.little_endian = self.llmodule.data_layout[0] == "e"
def needs_sret(self, lltyp, may_be_large=True):
if isinstance(lltyp, ll.VoidType):
return False
@ -1156,6 +1159,8 @@ class LLVMIRGenerator:
lltime_lo = self.llbuilder.trunc(lltime, lli32)
llnow_hiptr = self.llbuilder.bitcast(self.llbuiltin("now"), lli32.as_pointer())
llnow_loptr = self.llbuilder.gep(llnow_hiptr, [self.llindex(1)])
if self.little_endian:
lltime_hi, lltime_lo = lltime_lo, lltime_hi
llstore_hi = self.llbuilder.store_atomic(lltime_hi, llnow_hiptr, ordering="seq_cst", align=4)
llstore_lo = self.llbuilder.store_atomic(lltime_lo, llnow_loptr, ordering="seq_cst", align=4)
return llstore_lo
@ -1169,6 +1174,8 @@ class LLVMIRGenerator:
lladjusted_lo = self.llbuilder.trunc(lladjusted, lli32)
llnow_hiptr = self.llbuilder.bitcast(llnowptr, lli32.as_pointer())
llnow_loptr = self.llbuilder.gep(llnow_hiptr, [self.llindex(1)])
if self.little_endian:
lladjusted_hi, lladjusted_lo = lladjusted_lo, lladjusted_hi
llstore_hi = self.llbuilder.store_atomic(lladjusted_hi, llnow_hiptr, ordering="seq_cst", align=4)
llstore_lo = self.llbuilder.store_atomic(lladjusted_lo, llnow_loptr, ordering="seq_cst", align=4)
return llstore_lo