22544e2a54
The implemented logic matches the logic used for Clang in emitting these attributes. Although it's hoped that function attributes won't be needed in the future (vs using fast math flags in individual IR instructions), there are codegen differences currently with/without these attributes, as can be seen in issues like #79257 or by hacking Clang to avoid producing these attributes and observing codegen changes.
19 lines
1.1 KiB
Fortran
19 lines
1.1 KiB
Fortran
! RUN: %flang -O1 -emit-llvm -S -o - %s 2>&1| FileCheck %s --check-prefix=CHECK-NOFASTMATH
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! RUN: %flang -Ofast -emit-llvm -S -o - %s 2>&1| FileCheck %s --check-prefix=CHECK-OFAST
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! RUN: %flang -O1 -ffast-math -emit-llvm -S -o - %s 2>&1| FileCheck %s --check-prefix=CHECK-FFAST-MATH
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subroutine func
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end subroutine func
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! CHECK-NOFASTMATH-LABEL: define void @func_() local_unnamed_addr
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! CHECK-NOFASTMATH-SAME: #[[ATTRS:[0-9]+]]
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! CHECK-NOT fp-math"=
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! CHECK-OFAST-LABEL: define void @func_() local_unnamed_addr
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! CHECK-OFAST-SAME: #[[ATTRS:[0-9]+]]
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! CHECK-OFAST: attributes #[[ATTRS]] = { {{.*}}"approx-func-fp-math"="true" {{.*}}"no-infs-fp-math"="true" {{.*}}"no-nans-fp-math"="true" {{.*}}"no-signed-zeros-fp-math"="true" {{.*}}"unsafe-fp-math"="true"{{.*}} }
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! CHECK-FFAST-MATH-LABEL: define void @func_() local_unnamed_addr
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! CHECK-FFAST-MATH-SAME: #[[ATTRS:[0-9]+]]
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! CHECK-FFAST-MATH: attributes #[[ATTRS]] = { {{.*}}"approx-func-fp-math"="true" {{.*}}"no-infs-fp-math"="true" {{.*}}"no-nans-fp-math"="true" {{.*}}"no-signed-zeros-fp-math"="true" {{.*}}"unsafe-fp-math"="true"{{.*}} }
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