| Chandler Carruth | 4177e6f | 2012-07-02 12:47:22 +0000 | [diff] [blame] | 1 | ; RUN: llc < %s | grep "movl %esp, %ebp" |
| Dan Gohman | a4714e0 | 2009-07-30 01:56:29 +0000 | [diff] [blame] | 2 | ; PR4572 |
| 3 | |
| 4 | ; Don't coalesce with %esp if it would end up putting %esp in |
| 5 | ; the index position of an address, because that can't be |
| 6 | ; encoded on x86. It would actually be slightly better to |
| 7 | ; swap the address operands though, since there's no scale. |
| 8 | |
| 9 | target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32" |
| 10 | target triple = "i386-pc-mingw32" |
| 11 | %"struct.std::valarray<unsigned int>" = type { i32, i32* } |
| 12 | |
| 13 | define void @_ZSt17__gslice_to_indexjRKSt8valarrayIjES2_RS0_(i32 %__o, %"struct.std::valarray<unsigned int>"* nocapture %__l, %"struct.std::valarray<unsigned int>"* nocapture %__s, %"struct.std::valarray<unsigned int>"* nocapture %__i) nounwind { |
| 14 | entry: |
| 15 | %0 = alloca i32, i32 undef, align 4 ; <i32*> [#uses=1] |
| 16 | br i1 undef, label %return, label %bb4 |
| 17 | |
| 18 | bb4: ; preds = %bb7.backedge, %entry |
| 19 | %indvar = phi i32 [ %indvar.next, %bb7.backedge ], [ 0, %entry ] ; <i32> [#uses=2] |
| 20 | %scevgep24.sum = sub i32 undef, %indvar ; <i32> [#uses=2] |
| 21 | %scevgep25 = getelementptr i32* %0, i32 %scevgep24.sum ; <i32*> [#uses=1] |
| 22 | %scevgep27 = getelementptr i32* undef, i32 %scevgep24.sum ; <i32*> [#uses=1] |
| 23 | %1 = load i32* %scevgep27, align 4 ; <i32> [#uses=0] |
| 24 | br i1 undef, label %bb7.backedge, label %bb5 |
| 25 | |
| 26 | bb5: ; preds = %bb4 |
| 27 | store i32 0, i32* %scevgep25, align 4 |
| 28 | br label %bb7.backedge |
| 29 | |
| 30 | bb7.backedge: ; preds = %bb5, %bb4 |
| 31 | %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] |
| 32 | br label %bb4 |
| 33 | |
| 34 | return: ; preds = %entry |
| 35 | ret void |
| 36 | } |