| Jack Carter | 9710230 | 2013-03-05 19:10:54 +0000 | [diff] [blame] | 1 | // RUN: %clang -target mipsel-unknown-linux -S -o - -emit-llvm %s \ |
| 2 | // RUN: | FileCheck %s |
| 3 | |
| 4 | // This checks that the frontend will accept inline asm memory constraints. |
| 5 | |
| 6 | int foo() |
| 7 | { |
| 8 | |
| 9 | // 'R': An address that can be used in a non-macro load or stor' |
| 10 | // This test will result in the higher and lower nibbles being |
| 11 | // switched due to the lwl/lwr instruction pairs. |
| Richard Smith | eb54d42 | 2013-07-14 06:18:38 +0000 | [diff] [blame] | 12 | // 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, |
| Jack Carter | 9710230 | 2013-03-05 19:10:54 +0000 | [diff] [blame] | 13 | |
| 14 | int c = 0xffbbccdd; |
| 15 | |
| 16 | int *p = &c; |
| 17 | int out = 0; |
| 18 | |
| 19 | __asm volatile ( |
| 20 | "lwl %0, 1 + %1\n\t" |
| 21 | "lwr %0, 2 + %1\n\t" |
| 22 | : "=r"(out) |
| 23 | : "R"(*p) |
| 24 | ); |
| 25 | return 0; |
| 26 | } |