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Add our own legacy loop unswitch pass (#1339)

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Since legacy binding for loop unswitch pass was removed and we can't get
it back. Implement its equivalent in `aot_llvm_extra.cpp` and use it in
`aot_compiler.c`.

Follow up to #1183.
This commit is contained in:
Petr Penzin 2022-07-28 19:29:02 -07:00 committed by GitHub
parent 653b926d53
commit c075844001
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 14 additions and 3 deletions
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5
core/iwasm/compilation/aot_compiler.c
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@ -2643,9 +2643,8 @@ apply_func_passes(AOTCompContext *comp_ctx)
LLVMAddLoopRotatePass(pass_mgr);
#if LLVM_VERSION_MAJOR < 15
LLVMAddLoopUnswitchPass(pass_mgr);
/* Binding disabled in LLVM 15, don't add the pass util we can either
add a binding to SimpleLoopUnswitchPass, or add it to
aot_llvm_extra.cpp */
#else
aot_add_simple_loop_unswitch_pass(pass_mgr);
#endif
LLVMAddInstructionCombiningPass(pass_mgr);
LLVMAddCFGSimplificationPass(pass_mgr);

3
core/iwasm/compilation/aot_llvm.h
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@ -499,6 +499,9 @@ aot_check_simd_compatibility(const char *arch_c_str, const char *cpu_c_str);
void
aot_add_expand_memory_op_pass(LLVMPassManagerRef pass);
void
aot_add_simple_loop_unswitch_pass(LLVMPassManagerRef pass);
void
aot_apply_llvm_new_pass_manager(AOTCompContext *comp_ctx);

9
core/iwasm/compilation/aot_llvm_extra.cpp
View File

@ -66,6 +66,9 @@ aot_check_simd_compatibility(const char *arch_c_str, const char *cpu_c_str);
void
aot_add_expand_memory_op_pass(LLVMPassManagerRef pass);
void
aot_add_simple_loop_unswitch_pass(LLVMPassManagerRef pass);
void
aot_func_disable_tce(LLVMValueRef func);
@ -258,6 +261,12 @@ aot_add_expand_memory_op_pass(LLVMPassManagerRef pass)
unwrap(pass)->add(new ExpandMemoryOpPass());
}
void
aot_add_simple_loop_unswitch_pass(LLVMPassManagerRef pass)
{
unwrap(pass)->add(createSimpleLoopUnswitchLegacyPass());
}
bool
aot_check_simd_compatibility(const char *arch_c_str, const char *cpu_c_str)
{