e779d54d21
hlfir.assign must be rewritten in the bufferize pass since its operands, that can be expressions, may have been updated. This is just an operand update rewrite. The previous code was replacing the operation, but it was dropping all hlfir.assign on the floor doing so. This broke allocatable assignment semantics that use attributes. Update the operands in place instead to preserve the attributes, if any. Differential Revision: https://reviews.llvm.org/D148310
17 lines
1.0 KiB
Plaintext
17 lines
1.0 KiB
Plaintext
// Test hlfir.assign rewrite in the bufferization pass.
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// Assign in itself is not transformed, but its operands may be
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// expressions that are bufferized and must be updated.
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// RUN: fir-opt %s -bufferize-hlfir | FileCheck %s
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func.func @keep_attributes(%arg0: !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,8>>>>>, %arg1: !fir.box<!fir.array<1x!fir.char<1,?>>>) {
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%true = arith.constant true
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%0 = hlfir.as_expr %arg1 move %true : (!fir.box<!fir.array<1x!fir.char<1,?>>>, i1) -> !hlfir.expr<1x!fir.char<1,?>>
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hlfir.assign %0 to %arg0 realloc keep_lhs_len : !hlfir.expr<1x!fir.char<1,?>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,8>>>>>
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return
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}
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// CHECK-LABEL: func.func @keep_attributes(
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// CHECK-SAME: %[[X:.*]]: !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,8>>>>>,
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// CHECK-SAME: %[[Y:.*]]: !fir.box<!fir.array<1x!fir.char<1,?>>>) {
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// CHECK: hlfir.assign %[[Y]] to %[[X]] realloc keep_lhs_len : !fir.box<!fir.array<1x!fir.char<1,?>>>, !fir.ref<!fir.box<!fir.heap<!fir.array<?x!fir.char<1,8>>>>>
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