| Evan Cheng | dd3a41a | 2010-09-23 06:55:34 +0000 | [diff] [blame^] | 1 | ; RUN: llc < %s -march=x86 -tailcallopt | FileCheck %s |
| Arnold Schwaighofer | 363f53f | 2008-09-11 22:24:28 +0000 | [diff] [blame] | 2 | |
| 3 | declare i32 @putchar(i32) |
| 4 | |
| Evan Cheng | 86809cc | 2010-02-03 03:28:02 +0000 | [diff] [blame] | 5 | define fastcc i32 @checktail(i32 %x, i32* %f, i32 %g) nounwind { |
| Evan Cheng | dd3a41a | 2010-09-23 06:55:34 +0000 | [diff] [blame^] | 6 | ; CHECK: checktail: |
| Arnold Schwaighofer | 363f53f | 2008-09-11 22:24:28 +0000 | [diff] [blame] | 7 | %tmp1 = icmp sgt i32 %x, 0 |
| 8 | br i1 %tmp1, label %if-then, label %if-else |
| 9 | |
| 10 | if-then: |
| 11 | %fun_ptr = bitcast i32* %f to i32(i32, i32*, i32)* |
| 12 | %arg1 = add i32 %x, -1 |
| 13 | call i32 @putchar(i32 90) |
| Evan Cheng | dd3a41a | 2010-09-23 06:55:34 +0000 | [diff] [blame^] | 14 | ; CHECK: jmpl *%e{{.*}} |
| Arnold Schwaighofer | 363f53f | 2008-09-11 22:24:28 +0000 | [diff] [blame] | 15 | %res = tail call fastcc i32 %fun_ptr( i32 %arg1, i32 * %f, i32 %g) |
| 16 | ret i32 %res |
| 17 | |
| 18 | if-else: |
| 19 | ret i32 %x |
| 20 | } |
| 21 | |
| 22 | |
| Evan Cheng | 86809cc | 2010-02-03 03:28:02 +0000 | [diff] [blame] | 23 | define i32 @main() nounwind { |
| Arnold Schwaighofer | 363f53f | 2008-09-11 22:24:28 +0000 | [diff] [blame] | 24 | %f = bitcast i32 (i32, i32*, i32)* @checktail to i32* |
| 25 | %res = tail call fastcc i32 @checktail( i32 10, i32* %f,i32 10) |
| 26 | ret i32 %res |
| Evan Cheng | 86809cc | 2010-02-03 03:28:02 +0000 | [diff] [blame] | 27 | } |