| Bob Wilson | fe61fb1 | 2010-02-12 01:30:21 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s |
| 2 | target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:64:64-v128:128:128-a0:0:32-n32" |
| 3 | |
| 4 | define arm_apcscc i32 @test(i32 %n) nounwind { |
| 5 | ; CHECK: test: |
| 6 | ; CHECK-NOT: mov |
| 7 | ; CHECK: return |
| 8 | entry: |
| 9 | %0 = icmp eq i32 %n, 1 ; <i1> [#uses=1] |
| 10 | br i1 %0, label %return, label %bb.nph |
| 11 | |
| 12 | bb.nph: ; preds = %entry |
| 13 | %tmp = add i32 %n, -1 ; <i32> [#uses=1] |
| 14 | br label %bb |
| 15 | |
| 16 | bb: ; preds = %bb.nph, %bb |
| 17 | %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=1] |
| 18 | %u.05 = phi i64 [ undef, %bb.nph ], [ %ins, %bb ] ; <i64> [#uses=1] |
| 19 | %1 = tail call arm_apcscc i32 @f() nounwind ; <i32> [#uses=1] |
| 20 | %tmp4 = zext i32 %1 to i64 ; <i64> [#uses=1] |
| 21 | %mask = and i64 %u.05, -4294967296 ; <i64> [#uses=1] |
| 22 | %ins = or i64 %tmp4, %mask ; <i64> [#uses=2] |
| 23 | tail call arm_apcscc void @g(i64 %ins) nounwind |
| 24 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] |
| 25 | %exitcond = icmp eq i32 %indvar.next, %tmp ; <i1> [#uses=1] |
| 26 | br i1 %exitcond, label %return, label %bb |
| 27 | |
| 28 | return: ; preds = %bb, %entry |
| 29 | ret i32 undef |
| 30 | } |
| 31 | |
| Bob Wilson | bf9b221 | 2010-02-13 00:31:44 +0000 | [diff] [blame] | 32 | define arm_apcscc i32 @test_dead_cycle(i32 %n) nounwind { |
| 33 | ; CHECK: test_dead_cycle: |
| 34 | ; CHECK: blx |
| 35 | ; CHECK-NOT: mov |
| 36 | ; CHECK: blx |
| 37 | entry: |
| 38 | %0 = icmp eq i32 %n, 1 ; <i1> [#uses=1] |
| 39 | br i1 %0, label %return, label %bb.nph |
| 40 | |
| 41 | bb.nph: ; preds = %entry |
| 42 | %tmp = add i32 %n, -1 ; <i32> [#uses=2] |
| 43 | br label %bb |
| 44 | |
| 45 | bb: ; preds = %bb.nph, %bb2 |
| 46 | %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb2 ] ; <i32> [#uses=2] |
| 47 | %u.17 = phi i64 [ undef, %bb.nph ], [ %u.0, %bb2 ] ; <i64> [#uses=2] |
| 48 | %tmp9 = sub i32 %tmp, %indvar ; <i32> [#uses=1] |
| 49 | %1 = icmp sgt i32 %tmp9, 1 ; <i1> [#uses=1] |
| 50 | br i1 %1, label %bb1, label %bb2 |
| 51 | |
| 52 | bb1: ; preds = %bb |
| 53 | %2 = tail call arm_apcscc i32 @f() nounwind ; <i32> [#uses=1] |
| 54 | %tmp6 = zext i32 %2 to i64 ; <i64> [#uses=1] |
| 55 | %mask = and i64 %u.17, -4294967296 ; <i64> [#uses=1] |
| 56 | %ins = or i64 %tmp6, %mask ; <i64> [#uses=1] |
| 57 | tail call arm_apcscc void @g(i64 %ins) nounwind |
| 58 | br label %bb2 |
| 59 | |
| 60 | bb2: ; preds = %bb1, %bb |
| Bob Wilson | f1b0a34 | 2010-02-15 21:56:40 +0000 | [diff] [blame] | 61 | ; also check for duplicate induction variables (radar 7645034) |
| 62 | ; CHECK: subs r{{.*}}, #1 |
| 63 | ; CHECK-NOT: subs r{{.*}}, #1 |
| 64 | ; CHECK: pop |
| Bob Wilson | bf9b221 | 2010-02-13 00:31:44 +0000 | [diff] [blame] | 65 | %u.0 = phi i64 [ %ins, %bb1 ], [ %u.17, %bb ] ; <i64> [#uses=2] |
| 66 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] |
| 67 | %exitcond = icmp eq i32 %indvar.next, %tmp ; <i1> [#uses=1] |
| 68 | br i1 %exitcond, label %return, label %bb |
| 69 | |
| 70 | return: ; preds = %bb2, %entry |
| 71 | ret i32 undef |
| 72 | } |
| 73 | |
| Bob Wilson | fe61fb1 | 2010-02-12 01:30:21 +0000 | [diff] [blame] | 74 | declare arm_apcscc i32 @f() |
| 75 | |
| 76 | declare arm_apcscc void @g(i64) |