derek.holloway
7502bf64a4
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66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
// RUN: %clang_cc1 -triple aarch64 -fsyntax-only -verify -DVERIFY %s
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// RUN: %clang_cc1 -triple arm64-apple-darwin -fsyntax-only -fdiagnostics-parseable-fixits %s 2>&1 | FileCheck %s
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typedef unsigned char uint8_t;
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#ifdef VERIFY
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void test_s(int i) {
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asm("" :: "s"(i)); // expected-error{{invalid input constraint 's' in asm}}
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/// Codegen error
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asm("" :: "S"(i));
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asm("" :: "S"(test_s(i))); // expected-error{{invalid type 'void' in asm input for constraint 'S'}}
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}
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#else
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uint8_t constraint_r(uint8_t *addr) {
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uint8_t byte;
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__asm__ volatile("ldrb %0, [%1]" : "=r" (byte) : "r" (addr) : "memory");
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// CHECK: warning: value size does not match register size specified by the constraint and modifier
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// CHECK: note: use constraint modifier "w"
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// CHECK: fix-it:{{.*}}:{[[#@LINE-3]]:26-[[#@LINE-3]]:28}:"%w0"
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return byte;
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}
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uint8_t constraint_r_symbolic(uint8_t *addr) {
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uint8_t byte;
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__asm__ volatile("ldrb %[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
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// CHECK: warning: value size does not match register size specified by the constraint and modifier
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// CHECK: note: use constraint modifier "w"
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// CHECK: fix-it:{{.*}}:{[[#@LINE-3]]:26-[[#@LINE-3]]:31}:"%w[s0]"
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return byte;
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}
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#define PERCENT "%"
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uint8_t constraint_r_symbolic_macro(uint8_t *addr) {
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uint8_t byte;
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__asm__ volatile("ldrb "PERCENT"[s0], [%[s1]]" : [s0] "=r" (byte) : [s1] "r" (addr) : "memory");
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// CHECK: warning: value size does not match register size specified by the constraint and modifier
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// CHECK: note: use constraint modifier "w"
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// CHECK-NOT: fix-it
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return byte;
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}
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// CHECK: warning: value size does not match register size specified by the constraint and modifier
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// CHECK: asm ("%w0 %w1 %2" : "+r" (one) : "r" (wide_two));
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// CHECK: note: use constraint modifier "w"
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void read_write_modifier0(int one, int two) {
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long wide_two = two;
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asm ("%w0 %w1 %2" : "+r" (one) : "r" (wide_two));
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// CHECK: fix-it:{{.*}}:{[[#@LINE-1]]:17-[[#@LINE-1]]:19}:"%w2"
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}
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// CHECK-NOT: warning:
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void read_write_modifier1(int one, int two) {
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long wide_two = two;
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asm ("%w0 %1" : "+r" (one), "+r" (wide_two));
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}
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#endif
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