efdd0a29b7
While investigating the failures of `symbolize_pc.cpp` and `symbolize_pc_inline.cpp` on SPARC (both Solaris and Linux), I noticed that `__builtin_extract_return_addr` is a no-op in `clang` on all targets, while `gcc` has non-default implementations for arm, mips, s390, and sparc. This patch provides the SPARC implementation. For background see `SparcISelLowering.cpp` (`SparcTargetLowering::LowerReturn_32`), the SPARC psABI p.3-12, `%i7` and p.3-16/17, and SCD 2.4.1, p.3P-10, `%i7` and p.3P-15. Tested (after enabling the `sanitizer_common` tests on SPARC) on `sparcv9-sun-solaris2.11`. Differential Revision: https://reviews.llvm.org/D91607
30 lines
894 B
C
30 lines
894 B
C
// REQUIRES: sparc-registered-target
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// RUN: %clang_cc1 -triple sparc-unknown-unknown -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -triple sparc64-unknown-unknown -emit-llvm %s -o - | FileCheck -check-prefix CHECK-V9 %s
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void test_eh_return_data_regno(void)
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{
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volatile int res;
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res = __builtin_eh_return_data_regno(0); // CHECK,CHECKV9: store volatile i32 24
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res = __builtin_eh_return_data_regno(1); // CHECK,CHECKV9: store volatile i32 25
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}
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void *test_extract_return_address(void)
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{
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// CHECK,CHECKV9: getelementptr i8, i8* %0, i32 8
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return __builtin_extract_return_addr(__builtin_return_address(0));
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}
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struct s {
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void *p;
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};
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struct s test_extract_struct_return_address(void)
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{
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struct s s;
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// CHECK: getelementptr i8, i8* %0, i32 12
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// CHECK-V9: getelementptr i8, i8* %0, i32 8
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s.p = __builtin_extract_return_addr(__builtin_return_address(0));
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return s;
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}
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