| Reid Spencer | 69ccadd | 2006-12-02 04:23:10 +0000 | [diff] [blame] | 1 | ; RUN: llvm-upgrade < %s | llvm-as | llvm-dis > %t1.ll |
| Tanya Lattner | 3f7706b | 2004-11-07 06:08:43 +0000 | [diff] [blame] | 2 | ; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll |
| 3 | ; RUN: diff %t1.ll %t2.ll |
| 4 | |
| Chris Lattner | 6d95257 | 2003-05-08 03:46:51 +0000 | [diff] [blame] | 5 | ; Demonstrate all of the variable argument handling intrinsic functions plus |
| 6 | ; the va_arg instruction. |
| Chris Lattner | 92858ed | 2003-05-08 02:39:37 +0000 | [diff] [blame] | 7 | |
| Chris Lattner | 6d95257 | 2003-05-08 03:46:51 +0000 | [diff] [blame] | 8 | implementation |
| Reid Spencer | 69ccadd | 2006-12-02 04:23:10 +0000 | [diff] [blame] | 9 | declare void %llvm.va_start(sbyte** %ap) |
| 10 | declare void %llvm.va_copy(sbyte** %aq, sbyte** %ap) |
| 11 | declare void %llvm.va_end(sbyte** %ap) |
| Chris Lattner | 92858ed | 2003-05-08 02:39:37 +0000 | [diff] [blame] | 12 | |
| 13 | int %test(int %X, ...) { |
| Reid Spencer | 69ccadd | 2006-12-02 04:23:10 +0000 | [diff] [blame] | 14 | %ap = alloca sbyte* |
| 15 | call void %llvm.va_start(sbyte** %ap) |
| 16 | %tmp = va_arg sbyte** %ap, int |
| Chris Lattner | 6d95257 | 2003-05-08 03:46:51 +0000 | [diff] [blame] | 17 | |
| Reid Spencer | 69ccadd | 2006-12-02 04:23:10 +0000 | [diff] [blame] | 18 | %aq = alloca sbyte* |
| 19 | call void %llvm.va_copy(sbyte** %aq, sbyte** %ap) |
| 20 | call void %llvm.va_end(sbyte** %aq) |
| 21 | |
| 22 | call void %llvm.va_end(sbyte** %ap) |
| Chris Lattner | 92858ed | 2003-05-08 02:39:37 +0000 | [diff] [blame] | 23 | ret int %tmp |
| 24 | } |