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
37 lines
960 B
C++
37 lines
960 B
C++
// RUN: %clang_cc1 -triple=i386-pc-solaris2.11 -w -emit-llvm %s -o - | FileCheck %s
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extern "C" {
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struct statvfs64 {
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int f;
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};
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#pragma redefine_extname statvfs64 statvfs
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int statvfs64(struct statvfs64 *);
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}
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void some_func() {
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struct statvfs64 st;
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statvfs64(&st);
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// Check that even if there is a structure with redefined name before the
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// pragma, subsequent function name redefined properly. PR5172, Comment 11.
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// CHECK: call i32 @statvfs(%struct.statvfs64* noundef %st)
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}
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// This is a case when redefenition is deferred *and* we have a local of the
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// same name. PR23923.
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#pragma redefine_extname foo bar
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int f() {
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int foo = 0;
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return foo;
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}
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extern "C" {
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int foo() { return 1; }
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// CHECK: define{{.*}} i32 @bar()
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}
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// Check that #pragma redefine_extname applies to C code only, and shouldn't be
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// applied to C++.
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#pragma redefine_extname foo_cpp bar_cpp
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extern int foo_cpp() { return 1; }
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// CHECK-NOT: define{{.*}} i32 @bar_cpp()
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