fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
31 lines
929 B
C
31 lines
929 B
C
// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s
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// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-directives-only %s -o - | FileCheck %s
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// Inserting lifetime markers should not affect debuginfo: lifetime.end is not
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// a destructor, but instrumentation for the compiler. Ensure the debug info for
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// the return statement (in the IR) does not point to the function closing '}'
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// which is used to show some destructors have been called before leaving the
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// function.
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extern int f(int);
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extern int g(int);
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// CHECK-LABEL: define{{.*}} i32 @test
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int test(int a, int b) {
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int res;
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if (a==2) {
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int r = f(b);
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res = r + b;
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a += 2;
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} else {
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int r = f(a);
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res = r + a;
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b += 1;
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}
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return res;
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// CHECK: ret i32 %{{.*}}, !dbg [[DI:![0-9]+]]
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// CHECK: [[DI]] = !DILocation(line: [[@LINE-2]]
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}
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