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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
46 lines
940 B
C++
46 lines
940 B
C++
// RUN: %clang_cc1 %s -triple i386-unknown-unknown -emit-llvm -o - | FileCheck %s
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// CHECK: @var1 = external global i32
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// CHECK: @_ZN1N4var2E = external global i32
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// CHECK: @var5 = external global i32
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// CHECK: @_ZN1N4var3E = external global i32
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// CHECK: @_ZN1N4var4E = external global i32
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// CHECK: declare noundef i32 @_Z5func1v()
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// CHECK: declare noundef i32 @_ZN1N5func2Ev()
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// CHECK: declare i32 @func4()
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// CHECK: declare noundef i32 @_ZN1N5func3Ev()
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int f1() {
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extern int var1, func1();
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return var1 + func1();
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}
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namespace N {
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int f2() {
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extern int var2, func2();
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return var2 + func2();
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}
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struct S {
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static int f3() {
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extern int var3, func3();
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struct LC { int localfunc() { extern int var4; return var4; } };
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LC localobj;
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return var3 + func3() + localobj.localfunc();
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}
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};
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int anchorf3() { return S::f3(); }
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extern "C" {
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int f4() {
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extern int var5, func4();
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return var5 + func4();
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}
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}
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}
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