34e055d33e
The getConstraintRegister method is used by semantic checking of inline assembly statements in order to diagnose conflicts between clobber list and input/output lists. By overriding getConstraintRegister we get those diagnostics and we match RISC-V GCC's behavior. The implementation is trivial due to the lack of single-register RISC-V-specific constraints. Differential Revision: https://reviews.llvm.org/D108624
32 lines
1.4 KiB
C
32 lines
1.4 KiB
C
// RUN: %clang_cc1 -triple riscv32 -fsyntax-only -verify %s
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// RUN: %clang_cc1 -triple riscv64 -fsyntax-only -verify %s
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void I(int i) {
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static const int BelowMin = -2049;
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static const int AboveMax = 2048;
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asm volatile ("" :: "I"(BelowMin)); // expected-error{{value '-2049' out of range for constraint 'I'}}
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asm volatile ("" :: "I"(AboveMax)); // expected-error{{value '2048' out of range for constraint 'I'}}
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}
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void J(int j) {
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static const int BelowMin = -1;
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static const int AboveMax = 1;
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asm volatile ("" :: "J"(BelowMin)); // expected-error{{value '-1' out of range for constraint 'J'}}
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asm volatile ("" :: "J"(AboveMax)); // expected-error{{value '1' out of range for constraint 'J'}}
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}
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void K(int k) {
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static const int BelowMin = -1;
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static const int AboveMax = 32;
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asm volatile ("" :: "K"(BelowMin)); // expected-error{{value '-1' out of range for constraint 'K'}}
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asm volatile ("" :: "K"(AboveMax)); // expected-error{{value '32' out of range for constraint 'K'}}
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}
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void test_clobber_conflict(void) {
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register long x10 asm("x10");
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asm volatile("" :: "r"(x10) : "x10"); // expected-error {{conflicts with asm clobber list}}
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asm volatile("" :: "r"(x10) : "a0"); // expected-error {{conflicts with asm clobber list}}
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asm volatile("" : "=r"(x10) :: "x10"); // expected-error {{conflicts with asm clobber list}}
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asm volatile("" : "=r"(x10) :: "a0"); // expected-error {{conflicts with asm clobber list}}
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}
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