llvm-project/clang/test/CodeGen/mips-constraints-mem.c
Aaron Ballman adc402bf3d Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the eleventh batch of tests being updated (there are a
significant number of other tests left to be updated).
2022-02-15 16:06:43 -05:00

27 lines
695 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(void)
{
// '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,~{$1}"(i32* elementtype(i32) %{{[0-9,a-f]+}}) #1,
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;
}