; RUN: llc < %s -mtriple=x86_64-unknown-linux | FileCheck %s
; This test shouldn't require spills.
; CHECK: pushq
; CHECK-NOT: $rsp
; CHECK: popq
%struct..0anon = type { i32 }
%struct.rtvec_def = type { i32, [1 x %struct..0anon] }
%struct.rtx_def = type { i16, i8, i8, [1 x %struct..0anon] }
@rtx_format = external global [116 x ptr] ; <ptr> [#uses=1]
@rtx_length = external global [117 x i32] ; <ptr> [#uses=1]
declare ptr @fixup_memory_subreg(ptr, ptr, i32)
define ptr @walk_fixup_memory_subreg(ptr %x, ptr %insn) {
entry:
%tmp2 = icmp eq ptr %x, null ; <i1> [#uses=1]
br i1 %tmp2, label %UnifiedReturnBlock, label %cond_next
cond_next: ; preds = %entry
%tmp6 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 0 ; <ptr> [#uses=1]
%tmp7 = load i16, ptr %tmp6 ; <i16> [#uses=2]
%tmp78 = zext i16 %tmp7 to i32 ; <i32> [#uses=2]
%tmp10 = icmp eq i16 %tmp7, 54 ; <i1> [#uses=1]
br i1 %tmp10, label %cond_true13, label %cond_next32
cond_true13: ; preds = %cond_next
%tmp15 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3 ; <ptr> [#uses=1]
%tmp19 = load ptr, ptr %tmp15 ; <ptr> [#uses=1]
%tmp20 = getelementptr %struct.rtx_def, ptr %tmp19, i32 0, i32 0 ; <ptr> [#uses=1]
%tmp21 = load i16, ptr %tmp20 ; <i16> [#uses=1]
%tmp22 = icmp eq i16 %tmp21, 57 ; <i1> [#uses=1]
br i1 %tmp22, label %cond_true25, label %cond_next32
cond_true25: ; preds = %cond_true13
%tmp29 = tail call ptr @fixup_memory_subreg( ptr %x, ptr %insn, i32 1 ) nounwind ; <ptr> [#uses=1]
ret ptr %tmp29
cond_next32: ; preds = %cond_true13, %cond_next
%tmp34 = getelementptr [116 x ptr], ptr @rtx_format, i32 0, i32 %tmp78 ; <ptr> [#uses=1]
%tmp35 = load ptr, ptr %tmp34, align 4 ; <ptr> [#uses=1]
%tmp37 = getelementptr [117 x i32], ptr @rtx_length, i32 0, i32 %tmp78 ; <ptr> [#uses=1]
%tmp38 = load i32, ptr %tmp37, align 4 ; <i32> [#uses=1]
%i.011 = add i32 %tmp38, -1 ; <i32> [#uses=2]
%tmp12513 = icmp sgt i32 %i.011, -1 ; <i1> [#uses=1]
br i1 %tmp12513, label %bb, label %UnifiedReturnBlock
bb: ; preds = %bb123, %cond_next32
%indvar = phi i32 [ %indvar.next26, %bb123 ], [ 0, %cond_next32 ] ; <i32> [#uses=2]
%i.01.0 = sub i32 %i.011, %indvar ; <i32> [#uses=5]
%tmp42 = getelementptr i8, ptr %tmp35, i32 %i.01.0 ; <ptr> [#uses=2]
%tmp43 = load i8, ptr %tmp42 ; <i8> [#uses=1]
switch i8 %tmp43, label %bb123 [
i8 101, label %cond_true47
i8 69, label %bb105.preheader
]
cond_true47: ; preds = %bb
%tmp52 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0 ; <ptr> [#uses=1]
%tmp55 = load ptr, ptr %tmp52 ; <ptr> [#uses=1]
%tmp58 = tail call ptr @walk_fixup_memory_subreg( ptr %tmp55, ptr %insn ) nounwind ; <ptr> [#uses=1]
%tmp62 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0, i32 0 ; <ptr> [#uses=1]
%tmp58.c = ptrtoint ptr %tmp58 to i32 ; <i32> [#uses=1]
store i32 %tmp58.c, ptr %tmp62
%tmp6816 = load i8, ptr %tmp42 ; <i8> [#uses=1]
%tmp6917 = icmp eq i8 %tmp6816, 69 ; <i1> [#uses=1]
br i1 %tmp6917, label %bb105.preheader, label %bb123
bb105.preheader: ; preds = %cond_true47, %bb
%tmp11020 = getelementptr %struct.rtx_def, ptr %x, i32 0, i32 3, i32 %i.01.0 ; <ptr> [#uses=1]
%tmp11322 = load ptr, ptr %tmp11020 ; <ptr> [#uses=1]
%tmp11423 = getelementptr %struct.rtvec_def, ptr %tmp11322, i32 0, i32 0 ; <ptr> [#uses=1]
%tmp11524 = load i32, ptr %tmp11423 ; <i32> [#uses=1]
%tmp11625 = icmp eq i32 %tmp11524, 0 ; <i1> [#uses=1]
br i1 %tmp11625, label %bb123, label %bb73
bb73: ; preds = %bb73, %bb105.preheader
%j.019 = phi i32 [ %tmp104, %bb73 ], [ 0, %bb105.preheader ] ; <i32> [#uses=3]
%tmp81 = load ptr, ptr %tmp11020 ; <ptr> [#uses=2]
%tmp92 = getelementptr %struct.rtvec_def, ptr %tmp81, i32 0, i32 1, i32 %j.019 ; <ptr> [#uses=1]
%tmp95 = load ptr, ptr %tmp92 ; <ptr> [#uses=1]
%tmp98 = tail call ptr @walk_fixup_memory_subreg( ptr %tmp95, ptr %insn ) nounwind ; <ptr> [#uses=1]
%tmp101 = getelementptr %struct.rtvec_def, ptr %tmp81, i32 0, i32 1, i32 %j.019, i32 0 ; <ptr> [#uses=1]
%tmp98.c = ptrtoint ptr %tmp98 to i32 ; <i32> [#uses=1]
store i32 %tmp98.c, ptr %tmp101
%tmp104 = add i32 %j.019, 1 ; <i32> [#uses=2]
%tmp113 = load ptr, ptr %tmp11020 ; <ptr> [#uses=1]
%tmp114 = getelementptr %struct.rtvec_def, ptr %tmp113, i32 0, i32 0 ; <ptr> [#uses=1]
%tmp115 = load i32, ptr %tmp114 ; <i32> [#uses=1]
%tmp116 = icmp ult i32 %tmp104, %tmp115 ; <i1> [#uses=1]
br i1 %tmp116, label %bb73, label %bb123
bb123: ; preds = %bb73, %bb105.preheader, %cond_true47, %bb
%i.0 = add i32 %i.01.0, -1 ; <i32> [#uses=1]
%tmp125 = icmp sgt i32 %i.0, -1 ; <i1> [#uses=1]
%indvar.next26 = add i32 %indvar, 1 ; <i32> [#uses=1]
br i1 %tmp125, label %bb, label %UnifiedReturnBlock
UnifiedReturnBlock: ; preds = %bb123, %cond_next32, %entry
%UnifiedRetVal = phi ptr [ null, %entry ], [ %x, %cond_next32 ], [ %x, %bb123 ] ; <ptr> [#uses=1]
ret ptr %UnifiedRetVal
}
Codebase Browser
llvm