| Evan Cheng | ff5c7c4 | 2009-08-15 07:59:10 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | FileCheck %s |
| 2 | |
| 3 | define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) { |
| 4 | ; CHECK: t1: |
| 5 | ; CHECK: it ne |
| 6 | ; CHECK: cmpne |
| 7 | switch i32 %c, label %cond_next [ |
| 8 | i32 1, label %cond_true |
| 9 | i32 7, label %cond_true |
| 10 | ] |
| 11 | |
| 12 | cond_true: |
| 13 | %tmp12 = add i32 %a, 1 |
| 14 | %tmp1518 = add i32 %tmp12, %b |
| 15 | ret i32 %tmp1518 |
| 16 | |
| 17 | cond_next: |
| 18 | %tmp15 = add i32 %b, %a |
| 19 | ret i32 %tmp15 |
| 20 | } |
| 21 | |
| 22 | ; FIXME: Check for # of unconditional branch after adding branch folding post ifcvt. |
| 23 | define i32 @t2(i32 %a, i32 %b) { |
| 24 | entry: |
| 25 | ; CHECK: t2: |
| 26 | ; CHECK: ite le |
| 27 | ; CHECK: suble |
| 28 | ; CHECK: subgt |
| 29 | %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] |
| 30 | br i1 %tmp1434, label %bb17, label %bb.outer |
| 31 | |
| 32 | bb.outer: ; preds = %cond_false, %entry |
| 33 | %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] |
| 34 | %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] |
| 35 | br label %bb |
| 36 | |
| 37 | bb: ; preds = %cond_true, %bb.outer |
| 38 | %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] |
| 39 | %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] |
| 40 | %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] |
| 41 | %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] |
| 42 | %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] |
| 43 | br i1 %tmp3, label %cond_true, label %cond_false |
| 44 | |
| 45 | cond_true: ; preds = %bb |
| 46 | %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] |
| 47 | %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] |
| 48 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| 49 | br i1 %tmp1437, label %bb17, label %bb |
| 50 | |
| 51 | cond_false: ; preds = %bb |
| 52 | %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] |
| 53 | %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1] |
| 54 | br i1 %tmp14, label %bb17, label %bb.outer |
| 55 | |
| 56 | bb17: ; preds = %cond_false, %cond_true, %entry |
| 57 | %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] |
| 58 | ret i32 %a_addr.026.1 |
| 59 | } |
| 60 | |
| 61 | @x = external global i32* ; <i32**> [#uses=1] |
| 62 | |
| 63 | define void @foo(i32 %a) { |
| 64 | entry: |
| 65 | %tmp = load i32** @x ; <i32*> [#uses=1] |
| 66 | store i32 %a, i32* %tmp |
| 67 | ret void |
| 68 | } |
| 69 | |
| 70 | define void @t3(i32 %a, i32 %b) { |
| 71 | entry: |
| 72 | ; CHECK: t3: |
| 73 | ; CHECK: it lt |
| 74 | ; CHECK: poplt {r7, pc} |
| 75 | %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1] |
| 76 | br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock |
| 77 | |
| 78 | cond_true: ; preds = %entry |
| 79 | tail call void @foo( i32 %b ) |
| 80 | ret void |
| 81 | |
| 82 | UnifiedReturnBlock: ; preds = %entry |
| 83 | ret void |
| 84 | } |