Dan Gohman | d7df9e1 | 2010-02-12 10:34:29 +0000 | [diff] [blame] | 1 | ; RUN: llc %s -o - --x86-asm-syntax=att | grep {cmp. \$10} |
Dan Gohman | 87bc2f1 | 2008-06-13 21:43:41 +0000 | [diff] [blame] | 2 | target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" |
| 3 | target triple = "x86_64-apple-darwin9" |
| 4 | |
Dan Gohman | d7140f1 | 2010-01-21 02:09:26 +0000 | [diff] [blame] | 5 | ; The comparison happens after the relevant use, so the stride can easily |
| 6 | ; be changed. The comparison can be done in a narrower mode than the |
| 7 | ; induction variable. |
Dan Gohman | d7df9e1 | 2010-02-12 10:34:29 +0000 | [diff] [blame] | 8 | ; TODO: By making the first store post-increment as well, the loop setup |
| 9 | ; could be made simpler. |
Dan Gohman | cb387ac | 2008-06-16 22:34:15 +0000 | [diff] [blame] | 10 | |
Dan Gohman | a9dba96 | 2009-04-27 20:16:15 +0000 | [diff] [blame] | 11 | define void @foo() nounwind { |
Dan Gohman | 87bc2f1 | 2008-06-13 21:43:41 +0000 | [diff] [blame] | 12 | entry: |
| 13 | br label %loop |
| 14 | |
| 15 | loop: |
| 16 | %indvar = phi i32 [ 0, %entry ], [ %i.2.0.us1534, %loop ] ; <i32> [#uses=1] |
| 17 | %i.2.0.us1534 = add i32 %indvar, 1 ; <i32> [#uses=3] |
Dan Gohman | 87bc2f1 | 2008-06-13 21:43:41 +0000 | [diff] [blame] | 18 | %tmp628.us1540 = shl i32 %i.2.0.us1534, 1 ; <i32> [#uses=1] |
Dan Gohman | a9dba96 | 2009-04-27 20:16:15 +0000 | [diff] [blame] | 19 | %tmp645646647.us1547 = sext i32 %tmp628.us1540 to i64 ; <i64> [#uses=1] |
| 20 | store i64 %tmp645646647.us1547, i64* null |
Dan Gohman | cb387ac | 2008-06-16 22:34:15 +0000 | [diff] [blame] | 21 | %tmp611.us1535 = icmp eq i32 %i.2.0.us1534, 4 ; <i1> [#uses=2] |
Dan Gohman | a9dba96 | 2009-04-27 20:16:15 +0000 | [diff] [blame] | 22 | %tmp623.us1538 = select i1 %tmp611.us1535, i32 6, i32 0 ; <i32> [#uses=1] |
| 23 | store i32 %tmp623.us1538, i32* null |
Dan Gohman | 87bc2f1 | 2008-06-13 21:43:41 +0000 | [diff] [blame] | 24 | br i1 %tmp611.us1535, label %exit, label %loop |
| 25 | |
| 26 | exit: |
| 27 | ret void |
| 28 | } |