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
30 lines
744 B
Plaintext
30 lines
744 B
Plaintext
// RUN: %clang_cc1 -std=c++11 -fblocks -emit-llvm -o - -triple x86_64-apple-darwin11.3 %s | FileCheck %s
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namespace PR12746 {
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// CHECK: define{{.*}} zeroext i1 @_ZN7PR127462f1EPi
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bool f1(int *x) {
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// CHECK: store i8* bitcast (i1 (i8*)* @___ZN7PR127462f1EPi_block_invoke to i8*)
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bool (^outer)() = ^ {
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auto inner = [&]() -> bool {
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return x == 0;
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};
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return inner();
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};
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return outer();
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}
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// CHECK: define internal noundef zeroext i1 @___ZN7PR127462f1EPi_block_invoke
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// CHECK: call noundef zeroext i1 @"_ZZZN7PR127462f1EPiEUb_ENK3$_0clEv"
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bool f2(int *x) {
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auto outer = [&]() -> bool {
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bool (^inner)() = ^ {
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return x == 0;
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};
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return inner();
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};
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return outer();
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}
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}
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