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ab043ff680
Essentially the same as the GEP change in r230786.
A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)
import fileinput
import sys
import re
pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")
for line in sys.stdin:
sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))
Reviewers: rafael, dexonsmith, grosser
Differential Revision: http://reviews.llvm.org/D7649
llvm-svn: 230794
23 lines
687 B
LLVM
23 lines
687 B
LLVM
; RUN: llc -march=arm64 -o - %s | FileCheck %s
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; ARM64ISelLowering.cpp was creating a new (floating-point) load for efficiency
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; but not updating chain-successors of the old one. As a result, the two memory
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; operations in this function both ended up direct successors to the EntryToken
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; and could be reordered.
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@var = global i32 0, align 4
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define float @foo() {
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; CHECK-LABEL: foo:
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; Load must come before we clobber @var
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; CHECK: adrp x[[VARBASE:[0-9]+]], {{_?var}}
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; CHECK: ldr [[SREG:s[0-9]+]], [x[[VARBASE]],
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; CHECK: str wzr, [x[[VARBASE]],
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%val = load i32, i32* @var, align 4
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store i32 0, i32* @var, align 4
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%fltval = sitofp i32 %val to float
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ret float %fltval
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}
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