derek.holloway
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34 lines
1.1 KiB
Fortran
34 lines
1.1 KiB
Fortran
! Regression test for https://github.com/llvm/llvm-project/issues/178821
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! Verify that the stack-arrays pass does not move a stack allocation
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! for a temporary outside its stacksave/stackrestore scope when the
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! size operand is shared across scopes (e.g. due to ConvertHLFIRtoFIR
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! reusing a single size value, or CSE merging duplicates).
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! RUN: %flang_fc1 -emit-fir -fstack-arrays %s -o - \
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! RUN: | fir-opt --stack-arrays \
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! RUN: | FileCheck %s
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subroutine ss1(a)
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character*(*) a(1)
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character*1 t_s
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call u(t_s() // '?' // a)
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call u(t_s() // '?' // a)
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end subroutine
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! CHECK-LABEL: func.func @_QPss1
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!
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! First scope:
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! CHECK: llvm.intr.stacksave
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! CHECK: fir.alloca !fir.array<1x!fir.char<1,?>>
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! CHECK-SAME: {bindc_name = ".tmp.array"}
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! CHECK: fir.call @_QPu(
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! CHECK: llvm.intr.stackrestore
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!
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! Second scope (the second alloca must be AFTER the first stackrestore):
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! CHECK: llvm.intr.stacksave
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! CHECK: fir.alloca !fir.array<1x!fir.char<1,?>>
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! CHECK-SAME: {bindc_name = ".tmp.array"}
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! CHECK: fir.call @_QPu(
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! CHECK: llvm.intr.stackrestore
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