1; RUN: llc < %s -mtriple=x86_64-unknown-linux | FileCheck %s 2 3; This test shouldn't require spills. 4 5; CHECK: pushq 6; CHECK-NOT: $rsp 7; CHECK: popq 8 9 %struct..0anon = type { i32 } 10 %struct.rtvec_def = type { i32, [1 x %struct..0anon] } 11 %struct.rtx_def = type { i16, i8, i8, [1 x %struct..0anon] } 12@rtx_format = external global [116 x ptr] ; <ptr> [#uses=1] 13@rtx_length = external global [117 x i32] ; <ptr> [#uses=1] 14 15declare ptr @fixup_memory_subreg(ptr, ptr, i32) 16 17define ptr @walk_fixup_memory_subreg(ptr %x, ptr %insn) { 18entry: 19 %tmp2 = icmp eq ptr %x, null ; <i1> [#uses=1] 20 br i1 %tmp2, label %UnifiedReturnBlock, label %cond_next 21 22cond_next: ; preds = %entry 23 %tmp6 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 0 ; <ptr> [#uses=1] 24 %tmp7 = load i16, ptr %tmp6 ; <i16> [#uses=2] 25 %tmp78 = zext i16 %tmp7 to i32 ; <i32> [#uses=2] 26 %tmp10 = icmp eq i16 %tmp7, 54 ; <i1> [#uses=1] 27 br i1 %tmp10, label %cond_true13, label %cond_next32 28 29cond_true13: ; preds = %cond_next 30 %tmp15 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3 ; <ptr> [#uses=1] 31 %tmp19 = load ptr, ptr %tmp15 ; <ptr> [#uses=1] 32 %tmp20 = getelementptr %struct.rtx_def, ptr %tmp19, i32 0, i32 0 ; <ptr> [#uses=1] 33 %tmp21 = load i16, ptr %tmp20 ; <i16> [#uses=1] 34 %tmp22 = icmp eq i16 %tmp21, 57 ; <i1> [#uses=1] 35 br i1 %tmp22, label %cond_true25, label %cond_next32 36 37cond_true25: ; preds = %cond_true13 38 %tmp29 = tail call ptr @fixup_memory_subreg( ptr %x, ptr %insn, i32 1 ) nounwind ; <ptr> [#uses=1] 39 ret ptr %tmp29 40 41cond_next32: ; preds = %cond_true13, %cond_next 42 %tmp34 = getelementptr [116 x ptr], ptr @rtx_format, i32 0, i32 %tmp78 ; <ptr> [#uses=1] 43 %tmp35 = load ptr, ptr %tmp34, align 4 ; <ptr> [#uses=1] 44 %tmp37 = getelementptr [117 x i32], ptr @rtx_length, i32 0, i32 %tmp78 ; <ptr> [#uses=1] 45 %tmp38 = load i32, ptr %tmp37, align 4 ; <i32> [#uses=1] 46 %i.011 = add i32 %tmp38, -1 ; <i32> [#uses=2] 47 %tmp12513 = icmp sgt i32 %i.011, -1 ; <i1> [#uses=1] 48 br i1 %tmp12513, label %bb, label %UnifiedReturnBlock 49 50bb: ; preds = %bb123, %cond_next32 51 %indvar = phi i32 [ %indvar.next26, %bb123 ], [ 0, %cond_next32 ] ; <i32> [#uses=2] 52 %i.01.0 = sub i32 %i.011, %indvar ; <i32> [#uses=5] 53 %tmp42 = getelementptr i8, ptr %tmp35, i32 %i.01.0 ; <ptr> [#uses=2] 54 %tmp43 = load i8, ptr %tmp42 ; <i8> [#uses=1] 55 switch i8 %tmp43, label %bb123 [ 56 i8 101, label %cond_true47 57 i8 69, label %bb105.preheader 58 ] 59 60cond_true47: ; preds = %bb 61 %tmp52 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0 ; <ptr> [#uses=1] 62 %tmp55 = load ptr, ptr %tmp52 ; <ptr> [#uses=1] 63 %tmp58 = tail call ptr @walk_fixup_memory_subreg( ptr %tmp55, ptr %insn ) nounwind ; <ptr> [#uses=1] 64 %tmp62 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0, i32 0 ; <ptr> [#uses=1] 65 %tmp58.c = ptrtoint ptr %tmp58 to i32 ; <i32> [#uses=1] 66 store i32 %tmp58.c, ptr %tmp62 67 %tmp6816 = load i8, ptr %tmp42 ; <i8> [#uses=1] 68 %tmp6917 = icmp eq i8 %tmp6816, 69 ; <i1> [#uses=1] 69 br i1 %tmp6917, label %bb105.preheader, label %bb123 70 71bb105.preheader: ; preds = %cond_true47, %bb 72 %tmp11020 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0 ; <ptr> [#uses=1] 73 %tmp11322 = load ptr, ptr %tmp11020 ; <ptr> [#uses=1] 74 %tmp11423 = getelementptr %struct.rtvec_def, ptr %tmp11322, i32 0, i32 0 ; <ptr> [#uses=1] 75 %tmp11524 = load i32, ptr %tmp11423 ; <i32> [#uses=1] 76 %tmp11625 = icmp eq i32 %tmp11524, 0 ; <i1> [#uses=1] 77 br i1 %tmp11625, label %bb123, label %bb73 78 79bb73: ; preds = %bb73, %bb105.preheader 80 %j.019 = phi i32 [ %tmp104, %bb73 ], [ 0, %bb105.preheader ] ; <i32> [#uses=3] 81 %tmp81 = load ptr, ptr %tmp11020 ; <ptr> [#uses=2] 82 %tmp92 = getelementptr %struct.rtvec_def, ptr %tmp81, i32 0, i32 1, i32 %j.019 ; <ptr> [#uses=1] 83 %tmp95 = load ptr, ptr %tmp92 ; <ptr> [#uses=1] 84 %tmp98 = tail call ptr @walk_fixup_memory_subreg( ptr %tmp95, ptr %insn ) nounwind ; <ptr> [#uses=1] 85 %tmp101 = getelementptr %struct.rtvec_def, ptr %tmp81, i32 0, i32 1, i32 %j.019, i32 0 ; <ptr> [#uses=1] 86 %tmp98.c = ptrtoint ptr %tmp98 to i32 ; <i32> [#uses=1] 87 store i32 %tmp98.c, ptr %tmp101 88 %tmp104 = add i32 %j.019, 1 ; <i32> [#uses=2] 89 %tmp113 = load ptr, ptr %tmp11020 ; <ptr> [#uses=1] 90 %tmp114 = getelementptr %struct.rtvec_def, ptr %tmp113, i32 0, i32 0 ; <ptr> [#uses=1] 91 %tmp115 = load i32, ptr %tmp114 ; <i32> [#uses=1] 92 %tmp116 = icmp ult i32 %tmp104, %tmp115 ; <i1> [#uses=1] 93 br i1 %tmp116, label %bb73, label %bb123 94 95bb123: ; preds = %bb73, %bb105.preheader, %cond_true47, %bb 96 %i.0 = add i32 %i.01.0, -1 ; <i32> [#uses=1] 97 %tmp125 = icmp sgt i32 %i.0, -1 ; <i1> [#uses=1] 98 %indvar.next26 = add i32 %indvar, 1 ; <i32> [#uses=1] 99 br i1 %tmp125, label %bb, label %UnifiedReturnBlock 100 101UnifiedReturnBlock: ; preds = %bb123, %cond_next32, %entry 102 %UnifiedRetVal = phi ptr [ null, %entry ], [ %x, %cond_next32 ], [ %x, %bb123 ] ; <ptr> [#uses=1] 103 ret ptr %UnifiedRetVal 104} 105