xref: /llvm-project/clang/test/Misc/ppc-inline-asm-clobber-warning.c (revision 6a028296fe62252791a6b470eeb8409b17d48cd0) 
1*6a028296SQuinn Pham /// This test checks that the warning includes the location in the C source
2*6a028296SQuinn Pham /// file that contains the inline asm. Although this warning is emitted in llvm
3*6a028296SQuinn Pham /// it cannot be tested from IR as it does not have that location information at
4*6a028296SQuinn Pham /// that stage.
5*6a028296SQuinn Pham 
6*6a028296SQuinn Pham // REQUIRES: powerpc-registered-target
7*6a028296SQuinn Pham 
8*6a028296SQuinn Pham // RUN: %clang --target=powerpc-unknown-unknown -mcpu=pwr7 \
9*6a028296SQuinn Pham // RUN:   -c %s -o /dev/null 2>&1 | FileCheck %s
10*6a028296SQuinn Pham // RUN: %clang --target=powerpc64-unknown-unknown -mcpu=pwr7 \
11*6a028296SQuinn Pham // RUN:   -c %s -o /dev/null 2>&1 | FileCheck %s
12*6a028296SQuinn Pham 
test_r1_clobber()13*6a028296SQuinn Pham void test_r1_clobber() {
14*6a028296SQuinn Pham   __asm__("nop":::"r1");
15*6a028296SQuinn Pham }
16*6a028296SQuinn Pham 
17*6a028296SQuinn Pham // CHECK:      ppc-inline-asm-clobber-warning.c:14:11: warning: inline asm clobber list contains reserved registers: R1 [-Winline-asm]
18*6a028296SQuinn Pham // CHECK-NEXT:   __asm__("nop":::"r1");
19*6a028296SQuinn Pham // CHECK-NEXT:           ^
20*6a028296SQuinn Pham // CHECK-NEXT: ppc-inline-asm-clobber-warning.c:14:11: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
21*6a028296SQuinn Pham 
test_1_clobber()22*6a028296SQuinn Pham void test_1_clobber() {
23*6a028296SQuinn Pham   __asm__("nop":::"1");
24*6a028296SQuinn Pham }
25*6a028296SQuinn Pham 
26*6a028296SQuinn Pham // CHECK:      ppc-inline-asm-clobber-warning.c:23:11: warning: inline asm clobber list contains reserved registers: R1 [-Winline-asm]
27*6a028296SQuinn Pham // CHECK-NEXT:   __asm__("nop":::"1");
28*6a028296SQuinn Pham // CHECK-NEXT:           ^
29*6a028296SQuinn Pham // CHECK-NEXT: ppc-inline-asm-clobber-warning.c:23:11: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
30*6a028296SQuinn Pham 
test_sp_clobber()31*6a028296SQuinn Pham void test_sp_clobber() {
32*6a028296SQuinn Pham   __asm__("nop":::"sp");
33*6a028296SQuinn Pham }
34*6a028296SQuinn Pham 
35*6a028296SQuinn Pham // CHECK:      ppc-inline-asm-clobber-warning.c:32:11: warning: inline asm clobber list contains reserved registers: R1 [-Winline-asm]
36*6a028296SQuinn Pham // CHECK-NEXT:   __asm__("nop":::"sp");
37*6a028296SQuinn Pham // CHECK-NEXT:           ^
38*6a028296SQuinn Pham // CHECK-NEXT: ppc-inline-asm-clobber-warning.c:32:11: note: Reserved registers on the clobber list may not be preserved across the asm statement, and clobbering them may lead to undefined behaviour.
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