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annotate clang/test/Misc/inline-asm-clobber-warning.c @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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1 /// This test checks that the warning includes the location in the C source
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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2 /// file that contains the inline asm. Instead of saying <inline asm> for both.
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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3 /// Although this warning is emitted in llvm it cannot be tested from IR as
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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4 /// it does not have that location information at that stage.
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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5
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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6 // RUN: %clang -target arm-arm-none-eabi -march=armv7-m -c %s -o /dev/null \
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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7 // RUN: 2>&1 | FileCheck %s
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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8
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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9 // REQUIRES: arm-registered-target
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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10
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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11 void bar(void) {
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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12 __asm__ __volatile__("nop"
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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13 :
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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14 :
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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15 : "sp");
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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16 }
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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17
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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18 // CHECK: inline-asm-clobber-warning.c:12:24: warning: inline asm clobber list contains reserved registers: SP [-Winline-asm]
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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19 // CHECK-NEXT: __asm__ __volatile__("nop"
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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20 // CHECK-NEXT: ^
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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21 // CHECK-NEXT: inline-asm-clobber-warning.c:12:24: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.