0792ef7256
GCC's x86 and s390 ports support -mrecord-mcount. Other ports reject the option. aarch64-linux-gnu-gcc: error: unrecognized command line option ‘-mrecord-mcount’ Allowing this option can cause failures when building Linux kernel for aarch64, powerpc64, etc, which will think the feature is available if the clang command returns 0.
24 lines
985 B
C
24 lines
985 B
C
// RUN: %clang_cc1 -pg -mfentry -mnop-mcount -triple s390x-ibm-linux -emit-llvm \
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// RUN: -o - %s 2>&1 | FileCheck %s
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// RUN: not %clang_cc1 -pg -mnop-mcount -triple s390x-ibm-linux -emit-llvm -o - \
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// RUN: %s 2>&1 | FileCheck -check-prefix=NOMFENTRY %s
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// RUN: %clang_cc1 -mfentry -mnop-mcount -triple s390x-ibm-linux -emit-llvm -o - \
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// RUN: %s 2>&1 | FileCheck -check-prefix=NOPG %s
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// RUN: %clang_cc1 -mnop-mcount -triple s390x-ibm-linux -emit-llvm -o - %s \
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// RUN: 2>&1 | FileCheck -check-prefix=NOPG %s
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int foo(void) {
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return 0;
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}
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int __attribute__((no_instrument_function)) no_instrument(void) {
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return foo();
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}
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//CHECK: attributes #0 = { {{.*}}"mnop-mcount"{{.*}} }
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//CHECK: attributes #1 = { {{.*}} }
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//CHECK-NOT: attributes #1 = { {{.*}}"mnop-mcount"{{.*}} }
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//NOMFENTRY: error: option '-mnop-mcount' cannot be specified without '-mfentry'
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//NOPG-NOT: attributes #0 = { {{.*}}"mnop-mcount"{{.*}} }
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//NOPG-NOT: attributes #1 = { {{.*}}"mnop-mcount"{{.*}} }
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