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1; RUN: llc < %s -mtriple=x86_64-unknown-linux | FileCheck %s2 3; This test shouldn't require spills.4 5; CHECK: pushq6; CHECK-NOT: $rsp7; CHECK: popq8 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_next21 22cond_next: ; preds = %entry23 %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_next3228 29cond_true13: ; preds = %cond_next30 %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_next3236 37cond_true25: ; preds = %cond_true1338 %tmp29 = tail call ptr @fixup_memory_subreg( ptr %x, ptr %insn, i32 1 ) nounwind ; <ptr> [#uses=1]39 ret ptr %tmp2940 41cond_next32: ; preds = %cond_true13, %cond_next42 %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 %UnifiedReturnBlock49 50bb: ; preds = %bb123, %cond_next3251 %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_true4757 i8 69, label %bb105.preheader58 ]59 60cond_true47: ; preds = %bb61 %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 %tmp6267 %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 %bb12370 71bb105.preheader: ; preds = %cond_true47, %bb72 %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 %bb7378 79bb73: ; preds = %bb73, %bb105.preheader80 %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 %tmp10188 %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 %bb12394 95bb123: ; preds = %bb73, %bb105.preheader, %cond_true47, %bb96 %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 %UnifiedReturnBlock100 101UnifiedReturnBlock: ; preds = %bb123, %cond_next32, %entry102 %UnifiedRetVal = phi ptr [ null, %entry ], [ %x, %cond_next32 ], [ %x, %bb123 ] ; <ptr> [#uses=1]103 ret ptr %UnifiedRetVal104}105