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789a46f2d7
Summary: Clang -fpic defaults to -fno-semantic-interposition (GCC -fpic defaults to -fsemantic-interposition). Users need to specify -fsemantic-interposition to get semantic interposition behavior. Semantic interposition is currently a best-effort feature. There may still be some cases where it is not handled well. Reviewers: peter.smith, rnk, serge-sans-paille, sfertile, jfb, jdoerfert Subscribers: dschuff, jyknight, dylanmckay, nemanjai, jvesely, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, arphaman, PkmX, jocewei, jsji, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D73865
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -DBITCODE -emit-llvm-bc -o %t.bc %s
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -DBITCODE2 -emit-llvm-bc -o %t-2.bc %s
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -mlink-bitcode-file %t.bc \
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// RUN: -O3 -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-NO-BC %s
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -O3 -emit-llvm -o - \
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// RUN: -mlink-bitcode-file %t.bc -mlink-bitcode-file %t-2.bc %s \
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// RUN: | FileCheck -check-prefix=CHECK-NO-BC -check-prefix=CHECK-NO-BC2 %s
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// RUN: not %clang_cc1 -triple i386-pc-linux-gnu -DBITCODE -O3 -emit-llvm -o - \
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// RUN: -mlink-bitcode-file %t.bc %s 2>&1 | FileCheck -check-prefix=CHECK-BC %s
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// Make sure we deal with failure to load the file.
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// RUN: not %clang_cc1 -triple i386-pc-linux-gnu -mlink-bitcode-file no-such-file.bc \
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// RUN: -emit-llvm -o - %s 2>&1 | FileCheck -check-prefix=CHECK-NO-FILE %s
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int f(void);
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#ifdef BITCODE
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extern int f2(void);
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// CHECK-BC: fatal error: cannot link module {{.*}}'f': symbol multiply defined
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int f(void) {
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f2();
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return 42;
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}
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#elif BITCODE2
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int f2(void) { return 43; }
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#else
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// CHECK-NO-BC-LABEL: define dso_local i32 @g
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// CHECK-NO-BC: ret i32 42
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int g(void) {
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return f();
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}
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// CHECK-NO-BC-LABEL: define dso_local i32 @f
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// CHECK-NO-BC2-LABEL: define dso_local i32 @f2
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#endif
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// CHECK-NO-FILE: fatal error: cannot open file 'no-such-file.bc'
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