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This patch adds `nocallback` attributes for string/math libcalls. It allows FuncAttributor to infer `norecurse` more precisely and encourages more aggressive global optimization.
9 lines
430 B
LLVM
9 lines
430 B
LLVM
; RUN: opt < %s -mtriple=x86_64-- -passes=inferattrs -S | FileCheck --match-full-lines %s
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; Frontends can emit math functions with 'readonly', don't crash on it.
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; CHECK: declare double @acos(double) [[NOFREE_NOUNWIND_WILLRETURN_READNONE:#[0-9]+]]
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declare double @acos(double) readonly
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; CHECK-DAG: attributes [[NOFREE_NOUNWIND_WILLRETURN_READNONE]] = { mustprogress nocallback nofree nosync nounwind willreturn memory(none) }
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