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a72e83c26e
For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
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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