1 ; RUN: llc < %s -o - -mtriple=x86_64-apple-macosx | FileCheck %s 2 ; Test case for the recoloring of broken hints. 3 ; This is tricky to have something reasonably small to kick this optimization since 4 ; it requires that spliting and spilling occur. 5 ; The bottom line is that this test case is fragile. 6 ; This was reduced from the make_list function from the llvm-testsuite: 7 ; SingleSource/Benchmarks/McGill/chomp.c 8 9 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 10 target triple = "x86_64-apple-macosx10.9.0" 11 12 %struct._list = type { i32*, %struct._list* } 13 14 @ncol = external global i32, align 4 15 @nrow = external global i32, align 4 16 17 declare noalias i32* @copy_data() 18 19 declare noalias i8* @malloc(i64) 20 21 declare i32 @get_value() 22 23 declare i32 @in_wanted(i32* nocapture readonly) 24 25 declare noalias i32* @make_data() 26 27 ; CHECK-LABEL: make_list: 28 ; Function prologue. 29 ; CHECK: pushq 30 ; CHECK: subq ${{[0-9]+}}, %rsp 31 ; Move the first argument (%data) into a temporary register. 32 ; It will not survive the call to malloc otherwise. 33 ; CHECK: movq %rdi, [[ARG1:%r[0-9a-z]+]] 34 ; CHECK: callq _malloc 35 ; Compute %data - 1 as used for load in land.rhs.i (via the variable %indvars.iv.next.i). 36 ; CHECK: addq $-4, [[ARG1]] 37 ; We use to produce a useless copy here and move %data in another temporary register. 38 ; CHECK-NOT: movq [[ARG1]] 39 ; End of the first basic block. 40 ; CHECK: .align 41 ; Now check that %data is used in an address computation. 42 ; CHECK: leaq ([[ARG1]] 43 define %struct._list* @make_list(i32* nocapture readonly %data, i32* nocapture %value, i32* nocapture %all) { 44 entry: 45 %call = tail call i8* @malloc(i64 16) 46 %next = getelementptr inbounds i8, i8* %call, i64 8 47 %tmp = bitcast i8* %next to %struct._list** 48 %tmp2 = bitcast i8* %call to %struct._list* 49 %.pre78 = load i32, i32* @ncol, align 4 50 br label %for.cond1.preheader 51 52 for.cond1.preheader: ; preds = %for.inc32, %entry 53 %tmp4 = phi i32 [ %.pre78, %entry ], [ 0, %for.inc32 ] 54 %current.077 = phi %struct._list* [ %tmp2, %entry ], [ %current.1.lcssa, %for.inc32 ] 55 %cmp270 = icmp eq i32 %tmp4, 0 56 br i1 %cmp270, label %for.inc32, label %for.body3 57 58 for.body3: ; preds = %if.end31, %for.cond1.preheader 59 %current.173 = phi %struct._list* [ %current.2, %if.end31 ], [ %current.077, %for.cond1.preheader ] 60 %row.172 = phi i32 [ %row.3, %if.end31 ], [ 0, %for.cond1.preheader ] 61 %col.071 = phi i32 [ %inc, %if.end31 ], [ 0, %for.cond1.preheader ] 62 %call4 = tail call i32* @make_data() 63 %tmp5 = load i32, i32* @ncol, align 4 64 %tobool14.i = icmp eq i32 %tmp5, 0 65 br i1 %tobool14.i, label %while.cond.i, label %while.body.lr.ph.i 66 67 while.body.lr.ph.i: ; preds = %for.body3 68 %tmp6 = sext i32 %tmp5 to i64 69 br label %while.body.i 70 71 while.body.i: ; preds = %while.body.i, %while.body.lr.ph.i 72 %indvars.iv.i = phi i64 [ %tmp6, %while.body.lr.ph.i ], [ %indvars.iv.next.i, %while.body.i ] 73 %indvars.iv.next.i = add nsw i64 %indvars.iv.i, -1 74 %tmp9 = trunc i64 %indvars.iv.next.i to i32 75 %tobool.i = icmp eq i32 %tmp9, 0 76 br i1 %tobool.i, label %while.cond.i, label %while.body.i 77 78 while.cond.i: ; preds = %land.rhs.i, %while.body.i, %for.body3 79 %indvars.iv.i64 = phi i64 [ %indvars.iv.next.i65, %land.rhs.i ], [ 0, %for.body3 ], [ %tmp6, %while.body.i ] 80 %indvars.iv.next.i65 = add nsw i64 %indvars.iv.i64, -1 81 %tmp10 = trunc i64 %indvars.iv.i64 to i32 82 %tobool.i66 = icmp eq i32 %tmp10, 0 83 br i1 %tobool.i66, label %if.else, label %land.rhs.i 84 85 land.rhs.i: ; preds = %while.cond.i 86 %arrayidx.i67 = getelementptr inbounds i32, i32* %call4, i64 %indvars.iv.next.i65 87 %tmp11 = load i32, i32* %arrayidx.i67, align 4 88 %arrayidx2.i68 = getelementptr inbounds i32, i32* %data, i64 %indvars.iv.next.i65 89 %tmp12 = load i32, i32* %arrayidx2.i68, align 4 90 %cmp.i69 = icmp eq i32 %tmp11, %tmp12 91 br i1 %cmp.i69, label %while.cond.i, label %equal_data.exit 92 93 equal_data.exit: ; preds = %land.rhs.i 94 %cmp3.i = icmp slt i32 %tmp10, 1 95 br i1 %cmp3.i, label %if.else, label %if.then 96 97 if.then: ; preds = %equal_data.exit 98 %next7 = getelementptr inbounds %struct._list, %struct._list* %current.173, i64 0, i32 1 99 %tmp14 = load %struct._list*, %struct._list** %next7, align 8 100 %next12 = getelementptr inbounds %struct._list, %struct._list* %tmp14, i64 0, i32 1 101 store %struct._list* null, %struct._list** %next12, align 8 102 %tmp15 = load %struct._list*, %struct._list** %next7, align 8 103 %tmp16 = load i32, i32* %value, align 4 104 %cmp14 = icmp eq i32 %tmp16, 1 105 %.tmp16 = select i1 %cmp14, i32 0, i32 %tmp16 106 %tmp18 = load i32, i32* %all, align 4 107 %tmp19 = or i32 %tmp18, %.tmp16 108 %tmp20 = icmp eq i32 %tmp19, 0 109 br i1 %tmp20, label %if.then19, label %if.end31 110 111 if.then19: ; preds = %if.then 112 %call21 = tail call i32 @in_wanted(i32* %call4) 113 br label %if.end31 114 115 if.else: ; preds = %equal_data.exit, %while.cond.i 116 %cmp26 = icmp eq i32 %col.071, 0 117 %.row.172 = select i1 %cmp26, i32 0, i32 %row.172 118 %sub30 = add nsw i32 %tmp5, -1 119 br label %if.end31 120 121 if.end31: ; preds = %if.else, %if.then19, %if.then 122 %col.1 = phi i32 [ %sub30, %if.else ], [ 0, %if.then ], [ 0, %if.then19 ] 123 %row.3 = phi i32 [ %.row.172, %if.else ], [ %row.172, %if.then ], [ 0, %if.then19 ] 124 %current.2 = phi %struct._list* [ %current.173, %if.else ], [ %tmp15, %if.then ], [ %tmp15, %if.then19 ] 125 %inc = add nsw i32 %col.1, 1 126 %tmp25 = load i32, i32* @ncol, align 4 127 %cmp2 = icmp eq i32 %inc, %tmp25 128 br i1 %cmp2, label %for.cond1.for.inc32_crit_edge, label %for.body3 129 130 for.cond1.for.inc32_crit_edge: ; preds = %if.end31 131 %.pre79 = load i32, i32* @nrow, align 4 132 br label %for.inc32 133 134 for.inc32: ; preds = %for.cond1.for.inc32_crit_edge, %for.cond1.preheader 135 %tmp26 = phi i32 [ %.pre79, %for.cond1.for.inc32_crit_edge ], [ 0, %for.cond1.preheader ] 136 %current.1.lcssa = phi %struct._list* [ %current.2, %for.cond1.for.inc32_crit_edge ], [ %current.077, %for.cond1.preheader ] 137 %row.1.lcssa = phi i32 [ %row.3, %for.cond1.for.inc32_crit_edge ], [ 0, %for.cond1.preheader ] 138 %inc33 = add nsw i32 %row.1.lcssa, 1 139 %cmp = icmp eq i32 %inc33, %tmp26 140 br i1 %cmp, label %for.end34, label %for.cond1.preheader 141 142 for.end34: ; preds = %for.inc32 143 %.pre = load %struct._list*, %struct._list** %tmp, align 8 144 ret %struct._list* %.pre 145 } 146
