forked from OSchip/llvm-project
74 lines
1.8 KiB
MLIR
74 lines
1.8 KiB
MLIR
// RUN: mlir-opt -allow-unregistered-dialect %s -inline -split-input-file | FileCheck %s
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// This file tests the callgraph dead code elimination performed by the inliner.
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// Function is already dead.
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// CHECK-NOT: func private @dead_function
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func.func private @dead_function() {
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return
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}
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// Function becomes dead after inlining.
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// CHECK-NOT: func private @dead_function_b
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func.func @dead_function_b() {
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return
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}
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// CHECK: func @live_function()
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func.func @live_function() {
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call @dead_function_b() : () -> ()
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return
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}
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// Same as above, but a transitive example.
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// CHECK: func @live_function_b
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func.func @live_function_b() {
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return
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}
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// CHECK-NOT: func private @dead_function_c
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func.func private @dead_function_c() {
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call @live_function_b() : () -> ()
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return
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}
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// CHECK-NOT: func private @dead_function_d
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func.func private @dead_function_d() {
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call @dead_function_c() : () -> ()
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call @dead_function_c() : () -> ()
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return
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}
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// CHECK: func @live_function_c
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func.func @live_function_c() {
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call @dead_function_c() : () -> ()
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call @dead_function_d() : () -> ()
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return
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}
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// Function is referenced by non-callable top-level user.
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// CHECK: func private @live_function_d
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func.func private @live_function_d() {
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return
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}
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"live.user"() {use = @live_function_d} : () -> ()
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// -----
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// This test checks that the inliner can properly handle the deletion of
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// functions in different SCCs that are referenced by calls materialized during
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// canonicalization.
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// CHECK: func @live_function_e
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func.func @live_function_e() {
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call @dead_function_e() : () -> ()
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return
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}
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// CHECK-NOT: func @dead_function_e
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func.func private @dead_function_e() -> () {
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"test.fold_to_call_op"() {callee=@dead_function_f} : () -> ()
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return
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}
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// CHECK-NOT: func private @dead_function_f
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func.func private @dead_function_f() {
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return
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}
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