1b1c8d83d3
Turning on `enable_noundef_analysis` flag allows better codegen by removing freeze instructions. I modified clang by renaming `enable_noundef_analysis` flag to `disable-noundef-analysis` and turning it off by default. Test updates are made as a separate patch: D108453 Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D105169
42 lines
1.8 KiB
C++
42 lines
1.8 KiB
C++
// RUN: %clang_cc1 -std=c++2a -fblocks %s -triple %itanium_abi_triple -emit-llvm -o %t.ll
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// RUN: FileCheck --input-file %t.ll %s
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namespace test_func {
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constexpr const char *test_default_arg(const char *f = __builtin_FUNCTION()) {
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return f;
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}
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// CHECK: @[[EMPTY_STR:.+]] = private unnamed_addr constant [1 x i8] zeroinitializer
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// CHECK: @_ZN9test_func6globalE = {{(dso_local )?}}global i8* getelementptr inbounds ([1 x i8], [1 x i8]* @[[EMPTY_STR]], i32 0, i32 0)
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const char *global = test_default_arg();
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// CHECK: @_ZN9test_func10global_twoE = {{(dso_local )?}}global i8* getelementptr inbounds ([1 x i8], [1 x i8]* @[[EMPTY_STR]], i32 0, i32 0)
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const char *global_two = __builtin_FUNCTION();
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const char * const global_three = test_default_arg();
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// CHECK: @[[STR_ONE:.+]] = private unnamed_addr constant [14 x i8] c"test_func_one\00"
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// CHECK: @[[STR_TWO:.+]] = private unnamed_addr constant [14 x i8] c"test_func_two\00"
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// CHECK: @[[STR_THREE:.+]] = private unnamed_addr constant [20 x i8] c"do_default_arg_test\00"
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// CHECK: define {{(dso_local )?}}noundef i8* @_ZN9test_func13test_func_oneEv()
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// CHECK: ret i8* getelementptr inbounds ([14 x i8], [14 x i8]* @[[STR_ONE]], i32 0, i32 0)
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const char *test_func_one() {
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return __builtin_FUNCTION();
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}
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// CHECK: define {{(dso_local )?}}noundef i8* @_ZN9test_func13test_func_twoEv()
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// CHECK: ret i8* getelementptr inbounds ([14 x i8], [14 x i8]* @[[STR_TWO]], i32 0, i32 0)
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const char *test_func_two() {
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return __builtin_FUNCTION();
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}
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// CHECK: define {{(dso_local )?}}void @_ZN9test_func19do_default_arg_testEv()
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// CHECK: %call = call noundef i8* @_ZN9test_func16test_default_argEPKc(i8* noundef getelementptr inbounds ([20 x i8], [20 x i8]* @[[STR_THREE]], i32 0, i32 0))
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void do_default_arg_test() {
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test_default_arg();
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}
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} // namespace test_func
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