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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
26 lines
647 B
C++
26 lines
647 B
C++
// RUN: %clang_cc1 -triple=x86_64-apple-darwin9 -emit-llvm %s -o - | FileCheck %s
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extern "C" int printf(...);
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static int count;
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int func2(int c) { return printf("loading the func2(%d)\n", c); };
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int func1(int c) { return printf("loading the func1(%d)\n", c); }
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static int loader_1 = func1(++count);
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// CHECK: call noundef i32 @_Z5func1i
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int loader_2 = func2(++count);
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static int loader_3 = func1(++count);
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// CHECK: call noundef i32 @_Z5func1i
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int main() {}
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int loader_4 = func2(++count);
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static int loader_5 = func1(++count);
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int loader_6 = func2(++count);
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// CHECK: call noundef i32 @_Z5func1i
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// CHECK-NOT: call noundef i32 @_Z5func1i
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