1 ; RUN: llc < %s | grep "movl %esp, %ebp" 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, i32* %0, i32 %scevgep24.sum ; <i32*> [#uses=1] 22 %scevgep27 = getelementptr i32, i32* undef, i32 %scevgep24.sum ; <i32*> [#uses=1] 23 %1 = load i32, 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 } 37
