forked from OSchip/llvm-project
28 lines
1.2 KiB
MLIR
28 lines
1.2 KiB
MLIR
// RUN: mlir-opt -test-target-materialization-with-no-uses %s | FileCheck %s
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// The conversion is set up as follows:
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// - type_changer ops are illegal;
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// - type_changer ops are replaced with their operands;
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// - i16 types are converted to i64 by the type conversion;
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// - the rest of the types are legal.
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// The first type_changer is replaced with its operand. For the pattern to
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// apply to the second type_changer, the conversion infra creates a dummy
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// cast operation to cast from the i32 to i64 because the original op takes an
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// (illegal) i16 that became i64. This dummy operation should be replaced by
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// the one produced by the target materialization hook. At the moment when the
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// materialization decision is taken, the i64 replacement of the first type
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// change (the result of the dummy cast) has no uses, but the value it replaces
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// does, so the infra must call the materialization rather than assume the
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// dummy cast to be dead.
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// CHECK-LABEL: @foo
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func.func @foo() {
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%0 = "test.type_producer"() : () -> i32
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// CHECK: test.cast
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// CHECK-NOT: test.type_changer
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%1 = "test.type_changer"(%0) : (i32) -> i16
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%2 = "test.type_changer"(%1) : (i16) -> i64
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"test.type_consumer"(%2) : (i64) -> ()
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return
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}
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