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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
21 lines
448 B
C++
21 lines
448 B
C++
// RUN: %clang_cc1 -triple=i686-pc-unknown -std=c++11 %s -emit-llvm -o - | FileCheck %s
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// This was a problem in Sema, but only shows up as noinline missing
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// in CodeGen.
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// CHECK: define{{.*}} i32 @_Z15noduplicatedfuni(i32 noundef %a) [[NI:#[0-9]+]]
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int noduplicatedfun [[clang::noduplicate]] (int a) {
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return a+1;
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}
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int main() {
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return noduplicatedfun(5);
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}
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// CHECK: attributes [[NI]] = { {{.*}}noduplicate {{.*}}nounwind{{.*}} }
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