forked from OSchip/llvm-project
54 lines
1.3 KiB
MLIR
54 lines
1.3 KiB
MLIR
// RUN: mlir-opt -allow-unregistered-dialect %s -inline | 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 @dead_function
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func @dead_function() attributes {sym_visibility = "private"} {
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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 @dead_function_b
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func @dead_function_b() attributes {sym_visibility = "private"} {
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return
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}
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// CHECK: func @live_function()
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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 @live_function_b() {
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return
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}
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// CHECK-NOT: func @dead_function_c
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func @dead_function_c() attributes {sym_visibility = "private"} {
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call @live_function_b() : () -> ()
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return
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}
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// CHECK-NOT: func @dead_function_d
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func @dead_function_d() attributes {sym_visibility = "private"} {
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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 @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 @live_function_d
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func @live_function_d() attributes {sym_visibility = "private"} {
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return
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}
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"live.user"() {use = @live_function_d} : () -> ()
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