| Duncan Sands | 3dbbb3d | 2010-09-09 12:43:44 +0000 | [diff] [blame] | 1 | // RUN: %llvmgcc %s -c -O3 -emit-llvm -o - | llc -march=x86-64 -mtriple=x86_64-apple-darwin | FileCheck %s |
| Dale Johannesen | f336bea | 2010-05-18 19:03:51 +0000 | [diff] [blame] | 2 | // r9 used to be clobbered before its value was moved to r10. 7993104. |
| 3 | |
| 4 | void foo(int x, int y) { |
| 5 | // CHECK: bar |
| 6 | // CHECK: movq %r9, %r10 |
| 7 | // CHECK: movq %rdi, %r9 |
| 8 | // CHECK: bar |
| 9 | register int lr9 asm("r9") = x; |
| 10 | register int lr10 asm("r10") = y; |
| 11 | int foo; |
| 12 | asm volatile("bar" : "=r"(lr9) : "r"(lr9), "r"(lr10)); |
| 13 | foo = lr9; |
| 14 | lr9 = x; |
| 15 | lr10 = foo; |
| 16 | asm volatile("bar" : "=r"(lr9) : "r"(lr9), "r"(lr10)); |
| Duncan Sands | 3dbbb3d | 2010-09-09 12:43:44 +0000 | [diff] [blame] | 17 | } |