forked from OSchip/llvm-project
27 lines
679 B
C
27 lines
679 B
C
|
// RUN: %clang -target mipsel-unknown-linux -S -o - -emit-llvm %s \
|
||
|
|
// RUN: | FileCheck %s
|
||
|
|
|
||
|
|
// This checks that the frontend will accept inline asm memory constraints.
|
||
|
|
|
||
|
|
int foo()
|
||
|
|
{
|
||
|
|
|
||
|
|
// 'R': An address that can be used in a non-macro load or stor'
|
||
|
|
// This test will result in the higher and lower nibbles being
|
||
|
|
// switched due to the lwl/lwr instruction pairs.
|
||
|
|
// CHECK: %{{[0-9]+}} = call i32 asm sideeffect "lwl $0, 1 + $1\0A\09lwr $0, 2 + $1\0A\09", "=r,*R"(i32* %{{[0-9,a-f]+}}) #1, !srcloc !0
|
||
|
|
|
||
|
|
int c = 0xffbbccdd;
|
||
|
|
|
||
|
|
int *p = &c;
|
||
|
|
int out = 0;
|
||
|
|
|
||
|
|
__asm volatile (
|
||
|
|
"lwl %0, 1 + %1\n\t"
|
||
|
|
"lwr %0, 2 + %1\n\t"
|
||
|
|
: "=r"(out)
|
||
|
|
: "R"(*p)
|
||
|
|
);
|
||
|
|
return 0;
|
||
|
|
}
|