| Tanya Lattner | 9bc243b | 2008-03-01 07:38:40 +0000 | [diff] [blame] | 1 | ; RUN: llvm-as < %s | 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 | |
| Tanya Lattner | 9bc243b | 2008-03-01 07:38:40 +0000 | [diff] [blame] | 8 | declare void @llvm.va_start(i8*) |
| Chris Lattner | 92858ed | 2003-05-08 02:39:37 +0000 | [diff] [blame] | 9 | |
| Tanya Lattner | 9bc243b | 2008-03-01 07:38:40 +0000 | [diff] [blame] | 10 | declare void @llvm.va_copy(i8*, i8*) |
| Chris Lattner | 6d95257 | 2003-05-08 03:46:51 +0000 | [diff] [blame] | 11 | |
| Tanya Lattner | 9bc243b | 2008-03-01 07:38:40 +0000 | [diff] [blame] | 12 | declare void @llvm.va_end(i8*) |
| 13 | |
| 14 | define i32 @test(i32 %X, ...) { |
| 15 | %ap = alloca i8* ; <i8**> [#uses=4] |
| 16 | %va.upgrd.1 = bitcast i8** %ap to i8* ; <i8*> [#uses=1] |
| 17 | call void @llvm.va_start( i8* %va.upgrd.1 ) |
| 18 | %tmp = va_arg i8** %ap, i32 ; <i32> [#uses=1] |
| 19 | %aq = alloca i8* ; <i8**> [#uses=2] |
| 20 | %va0.upgrd.2 = bitcast i8** %aq to i8* ; <i8*> [#uses=1] |
| 21 | %va1.upgrd.3 = bitcast i8** %ap to i8* ; <i8*> [#uses=1] |
| 22 | call void @llvm.va_copy( i8* %va0.upgrd.2, i8* %va1.upgrd.3 ) |
| 23 | %va.upgrd.4 = bitcast i8** %aq to i8* ; <i8*> [#uses=1] |
| 24 | call void @llvm.va_end( i8* %va.upgrd.4 ) |
| 25 | %va.upgrd.5 = bitcast i8** %ap to i8* ; <i8*> [#uses=1] |
| 26 | call void @llvm.va_end( i8* %va.upgrd.5 ) |
| 27 | ret i32 %tmp |
| Chris Lattner | 92858ed | 2003-05-08 02:39:37 +0000 | [diff] [blame] | 28 | } |
| Tanya Lattner | 9bc243b | 2008-03-01 07:38:40 +0000 | [diff] [blame] | 29 | |