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on every node as it legalizes them. This makes it easier to use hasOneUse() heuristics, since unneeded nodes can be removed from the DAG earlier. Make LegalizeOps visit the DAG in an operands-last order. It previously used operands-first, because LegalizeTypes has to go operands-first, and LegalizeTypes used to be part of LegalizeOps, but they're now split. The operands-last order is more natural for several legalization tasks. For example, it allows lowering code for nodes with floating-point or vector constants to see those constants directly instead of seeing the lowered form (often constant-pool loads). This makes some things somewhat more complicated today, though it ought to allow things to be simpler in the future. It also fixes some bugs exposed by Legalizing using RAUW aggressively. Remove the part of LegalizeOps that attempted to patch up invalid chain operands on libcalls generated by LegalizeTypes, since it doesn't work with the new LegalizeOps traversal order. Instead, define what LegalizeTypes is doing to be correct, and transfer the responsibility of keeping calls from having overlapping calling sequences into the scheduler. Teach the scheduler to model callseq_begin/end pairs as having a physical register definition/use to prevent calls from having overlapping calling sequences. This is also somewhat complicated, though there are ways it might be simplified in the future. This addresses rdar://9816668, rdar://10043614, rdar://8434668, and others. Please direct high-level questions about this patch to management. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143177 91177308-0d34-0410-b5e6-96231b3b80d8
61 lines
3.4 KiB
LLVM
61 lines
3.4 KiB
LLVM
; RUN: llc -mtriple=thumbv6-apple-darwin < %s
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; rdar://problem/9416774
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; ModuleID = 'reduced.ll'
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
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target triple = "thumbv7-apple-ios"
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%struct.MMMMMMMMMMMM = type { [4 x %struct.RRRRRRRR] }
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%struct.RRRRRRRR = type { [78 x i32] }
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@kkkkkk = external constant i8*
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@__PRETTY_FUNCTION__._ZN12CLGll = private unnamed_addr constant [62 x i8] c"static void tttttttttttt::lllllllllllll(const MMMMMMMMMMMM &)\00"
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@.str = private unnamed_addr constant [75 x i8] c"\09GGGGGGGGGGGGGGGGGGGGGGG:,BE:0x%08lx,ALM:0x%08lx,LTO:0x%08lx,CBEE:0x%08lx\0A\00"
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define void @_ZN12CLGll(%struct.MMMMMMMMMMMM* %aidData) ssp align 2 {
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entry:
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%aidData.addr = alloca %struct.MMMMMMMMMMMM*, align 4
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%agg.tmp = alloca %struct.RRRRRRRR, align 4
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%agg.tmp4 = alloca %struct.RRRRRRRR, align 4
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%agg.tmp10 = alloca %struct.RRRRRRRR, align 4
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%agg.tmp16 = alloca %struct.RRRRRRRR, align 4
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store %struct.MMMMMMMMMMMM* %aidData, %struct.MMMMMMMMMMMM** %aidData.addr, align 4
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br label %do.body
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do.body: ; preds = %entry
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%tmp = load i8** @kkkkkk, align 4
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%tmp1 = load %struct.MMMMMMMMMMMM** %aidData.addr
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%eph = getelementptr inbounds %struct.MMMMMMMMMMMM* %tmp1, i32 0, i32 0
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%arrayidx = getelementptr inbounds [4 x %struct.RRRRRRRR]* %eph, i32 0, i32 0
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%tmp2 = bitcast %struct.RRRRRRRR* %agg.tmp to i8*
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%tmp3 = bitcast %struct.RRRRRRRR* %arrayidx to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp2, i8* %tmp3, i32 312, i32 4, i1 false)
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%tmp5 = load %struct.MMMMMMMMMMMM** %aidData.addr
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%eph6 = getelementptr inbounds %struct.MMMMMMMMMMMM* %tmp5, i32 0, i32 0
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%arrayidx7 = getelementptr inbounds [4 x %struct.RRRRRRRR]* %eph6, i32 0, i32 1
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%tmp8 = bitcast %struct.RRRRRRRR* %agg.tmp4 to i8*
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%tmp9 = bitcast %struct.RRRRRRRR* %arrayidx7 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp8, i8* %tmp9, i32 312, i32 4, i1 false)
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%tmp11 = load %struct.MMMMMMMMMMMM** %aidData.addr
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%eph12 = getelementptr inbounds %struct.MMMMMMMMMMMM* %tmp11, i32 0, i32 0
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%arrayidx13 = getelementptr inbounds [4 x %struct.RRRRRRRR]* %eph12, i32 0, i32 2
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%tmp14 = bitcast %struct.RRRRRRRR* %agg.tmp10 to i8*
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%tmp15 = bitcast %struct.RRRRRRRR* %arrayidx13 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp14, i8* %tmp15, i32 312, i32 4, i1 false)
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%tmp17 = load %struct.MMMMMMMMMMMM** %aidData.addr
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%eph18 = getelementptr inbounds %struct.MMMMMMMMMMMM* %tmp17, i32 0, i32 0
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%arrayidx19 = getelementptr inbounds [4 x %struct.RRRRRRRR]* %eph18, i32 0, i32 3
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%tmp20 = bitcast %struct.RRRRRRRR* %agg.tmp16 to i8*
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%tmp21 = bitcast %struct.RRRRRRRR* %arrayidx19 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp20, i8* %tmp21, i32 312, i32 4, i1 false)
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call void (i8*, i32, i8*, i8*, ...)* @CLLoggingLog(i8* %tmp, i32 2, i8* getelementptr inbounds ([62 x i8]* @__PRETTY_FUNCTION__._ZN12CLGll, i32 0, i32 0), i8* getelementptr inbounds ([75 x i8]* @.str, i32 0, i32 0), %struct.RRRRRRRR* byval %agg.tmp, %struct.RRRRRRRR* byval %agg.tmp4, %struct.RRRRRRRR* byval %agg.tmp10, %struct.RRRRRRRR* byval %agg.tmp16)
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br label %do.end
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do.end: ; preds = %do.body
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ret void
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}
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declare void @CLLoggingLog(i8*, i32, i8*, i8*, ...)
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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