| Evan Cheng | db6cbe1 | 2011-04-22 01:42:52 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s |
| 2 | |
| 3 | ; Use sp, #imm to lower frame indices when the offset is multiple of 4 |
| 4 | ; and in the range of 0-1020. This saves code size by utilizing |
| 5 | ; 16-bit instructions. |
| 6 | ; rdar://9321541 |
| 7 | |
| 8 | define i32 @t() nounwind { |
| 9 | entry: |
| 10 | ; CHECK: t: |
| 11 | ; CHECK: sub sp, #12 |
| 12 | ; CHECK-NOT: sub |
| 13 | ; CHECK: add r0, sp, #4 |
| 14 | ; CHECK: add r1, sp, #8 |
| 15 | ; CHECK: mov r2, sp |
| 16 | %size = alloca i32, align 4 |
| 17 | %count = alloca i32, align 4 |
| 18 | %index = alloca i32, align 4 |
| 19 | %0 = call i32 @foo(i32* %count, i32* %size, i32* %index) nounwind |
| 20 | ret i32 %0 |
| 21 | } |
| 22 | |
| 23 | declare i32 @foo(i32*, i32*, i32*) |