146 lines
6.5 KiB
LLVM
146 lines
6.5 KiB
LLVM
; RUN: llc < %s -o - -mtriple=x86_64-apple-macosx | FileCheck %s
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; Test case for the recoloring of broken hints.
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; This is tricky to have something reasonably small to kick this optimization since
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; it requires that spliting and spilling occur.
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; The bottom line is that this test case is fragile.
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; This was reduced from the make_list function from the llvm-testsuite:
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; SingleSource/Benchmarks/McGill/chomp.c
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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%struct._list = type { i32*, %struct._list* }
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@ncol = external global i32, align 4
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@nrow = external global i32, align 4
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declare noalias i32* @copy_data()
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declare noalias i8* @malloc(i64)
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declare i32 @get_value()
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declare i32 @in_wanted(i32* nocapture readonly)
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declare noalias i32* @make_data()
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; CHECK-LABEL: make_list:
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; Function prologue.
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; CHECK: pushq
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; CHECK: subq ${{[0-9]+}}, %rsp
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; Move the first argument (%data) into a temporary register.
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; It will not survive the call to malloc otherwise.
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; CHECK: movq %rdi, [[ARG1:%r[0-9a-z]+]]
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; CHECK: callq _malloc
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; Compute %data - 1 as used for load in land.rhs.i (via the variable %indvars.iv.next.i).
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; CHECK: addq $-4, [[ARG1]]
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; We use to produce a useless copy here and move %data in another temporary register.
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; CHECK-NOT: movq [[ARG1]]
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; End of the first basic block.
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; CHECK: .p2align
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; Now check that %data is used in an address computation.
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; CHECK: leaq ([[ARG1]]
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define %struct._list* @make_list(i32* nocapture readonly %data, i32* nocapture %value, i32* nocapture %all) {
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entry:
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%call = tail call i8* @malloc(i64 16)
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%next = getelementptr inbounds i8, i8* %call, i64 8
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%tmp = bitcast i8* %next to %struct._list**
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%tmp2 = bitcast i8* %call to %struct._list*
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%.pre78 = load i32, i32* @ncol, align 4
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br label %for.cond1.preheader
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for.cond1.preheader: ; preds = %for.inc32, %entry
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%tmp4 = phi i32 [ %.pre78, %entry ], [ 0, %for.inc32 ]
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%current.077 = phi %struct._list* [ %tmp2, %entry ], [ %current.1.lcssa, %for.inc32 ]
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%cmp270 = icmp eq i32 %tmp4, 0
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br i1 %cmp270, label %for.inc32, label %for.body3
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for.body3: ; preds = %if.end31, %for.cond1.preheader
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%current.173 = phi %struct._list* [ %current.2, %if.end31 ], [ %current.077, %for.cond1.preheader ]
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%row.172 = phi i32 [ %row.3, %if.end31 ], [ 0, %for.cond1.preheader ]
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%col.071 = phi i32 [ %inc, %if.end31 ], [ 0, %for.cond1.preheader ]
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%call4 = tail call i32* @make_data()
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%tmp5 = load i32, i32* @ncol, align 4
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%tobool14.i = icmp eq i32 %tmp5, 0
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br i1 %tobool14.i, label %while.cond.i, label %while.body.lr.ph.i
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while.body.lr.ph.i: ; preds = %for.body3
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%tmp6 = sext i32 %tmp5 to i64
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br label %while.body.i
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while.body.i: ; preds = %while.body.i, %while.body.lr.ph.i
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%indvars.iv.i = phi i64 [ %tmp6, %while.body.lr.ph.i ], [ %indvars.iv.next.i, %while.body.i ]
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%indvars.iv.next.i = add nsw i64 %indvars.iv.i, -1
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%tmp9 = trunc i64 %indvars.iv.next.i to i32
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%tobool.i = icmp eq i32 %tmp9, 0
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br i1 %tobool.i, label %while.cond.i, label %while.body.i
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while.cond.i: ; preds = %land.rhs.i, %while.body.i, %for.body3
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%indvars.iv.i64 = phi i64 [ %indvars.iv.next.i65, %land.rhs.i ], [ 0, %for.body3 ], [ %tmp6, %while.body.i ]
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%indvars.iv.next.i65 = add nsw i64 %indvars.iv.i64, -1
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%tmp10 = trunc i64 %indvars.iv.i64 to i32
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%tobool.i66 = icmp eq i32 %tmp10, 0
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br i1 %tobool.i66, label %if.else, label %land.rhs.i
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land.rhs.i: ; preds = %while.cond.i
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%arrayidx.i67 = getelementptr inbounds i32, i32* %call4, i64 %indvars.iv.next.i65
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%tmp11 = load i32, i32* %arrayidx.i67, align 4
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%arrayidx2.i68 = getelementptr inbounds i32, i32* %data, i64 %indvars.iv.next.i65
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%tmp12 = load i32, i32* %arrayidx2.i68, align 4
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%cmp.i69 = icmp eq i32 %tmp11, %tmp12
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br i1 %cmp.i69, label %while.cond.i, label %equal_data.exit
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equal_data.exit: ; preds = %land.rhs.i
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%cmp3.i = icmp slt i32 %tmp10, 1
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br i1 %cmp3.i, label %if.else, label %if.then
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if.then: ; preds = %equal_data.exit
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%next7 = getelementptr inbounds %struct._list, %struct._list* %current.173, i64 0, i32 1
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%tmp14 = load %struct._list*, %struct._list** %next7, align 8
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%next12 = getelementptr inbounds %struct._list, %struct._list* %tmp14, i64 0, i32 1
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store %struct._list* null, %struct._list** %next12, align 8
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%tmp15 = load %struct._list*, %struct._list** %next7, align 8
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%tmp16 = load i32, i32* %value, align 4
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%cmp14 = icmp eq i32 %tmp16, 1
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%.tmp16 = select i1 %cmp14, i32 0, i32 %tmp16
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%tmp18 = load i32, i32* %all, align 4
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%tmp19 = or i32 %tmp18, %.tmp16
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%tmp20 = icmp eq i32 %tmp19, 0
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br i1 %tmp20, label %if.then19, label %if.end31
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if.then19: ; preds = %if.then
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%call21 = tail call i32 @in_wanted(i32* %call4)
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br label %if.end31
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if.else: ; preds = %equal_data.exit, %while.cond.i
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%cmp26 = icmp eq i32 %col.071, 0
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%.row.172 = select i1 %cmp26, i32 0, i32 %row.172
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%sub30 = add nsw i32 %tmp5, -1
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br label %if.end31
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if.end31: ; preds = %if.else, %if.then19, %if.then
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%col.1 = phi i32 [ %sub30, %if.else ], [ 0, %if.then ], [ 0, %if.then19 ]
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%row.3 = phi i32 [ %.row.172, %if.else ], [ %row.172, %if.then ], [ 0, %if.then19 ]
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%current.2 = phi %struct._list* [ %current.173, %if.else ], [ %tmp15, %if.then ], [ %tmp15, %if.then19 ]
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%inc = add nsw i32 %col.1, 1
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%tmp25 = load i32, i32* @ncol, align 4
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%cmp2 = icmp eq i32 %inc, %tmp25
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br i1 %cmp2, label %for.cond1.for.inc32_crit_edge, label %for.body3
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for.cond1.for.inc32_crit_edge: ; preds = %if.end31
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%.pre79 = load i32, i32* @nrow, align 4
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br label %for.inc32
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for.inc32: ; preds = %for.cond1.for.inc32_crit_edge, %for.cond1.preheader
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%tmp26 = phi i32 [ %.pre79, %for.cond1.for.inc32_crit_edge ], [ 0, %for.cond1.preheader ]
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%current.1.lcssa = phi %struct._list* [ %current.2, %for.cond1.for.inc32_crit_edge ], [ %current.077, %for.cond1.preheader ]
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%row.1.lcssa = phi i32 [ %row.3, %for.cond1.for.inc32_crit_edge ], [ 0, %for.cond1.preheader ]
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%inc33 = add nsw i32 %row.1.lcssa, 1
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%cmp = icmp eq i32 %inc33, %tmp26
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br i1 %cmp, label %for.end34, label %for.cond1.preheader
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for.end34: ; preds = %for.inc32
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%.pre = load %struct._list*, %struct._list** %tmp, align 8
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ret %struct._list* %.pre
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}
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