257 lines
12 KiB
LLVM
257 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S -enable-new-pm=0 | FileCheck %s
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; RUN: opt < %s -passes='require<loops>,instcombine' -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @foo(i8* nocapture readnone %match, i32 %cur_match, i32 %best_len, i32 %scan_end, i32* nocapture readonly %prev, i32 %limit, i32 %chain_length, i8* nocapture readonly %win, i32 %wmask) {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IDX_EXT2:%.*]] = zext i32 [[CUR_MATCH:%.*]] to i64
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; CHECK-NEXT: [[ADD_PTR4:%.*]] = getelementptr inbounds i8, i8* [[WIN:%.*]], i64 [[IDX_EXT2]]
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; CHECK-NEXT: [[IDX_EXT1:%.*]] = zext i32 [[BEST_LEN:%.*]] to i64
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; CHECK-NEXT: [[ADD_PTR25:%.*]] = getelementptr inbounds i8, i8* [[ADD_PTR4]], i64 [[IDX_EXT1]]
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; CHECK-NEXT: [[ADD_PTR36:%.*]] = getelementptr inbounds i8, i8* [[ADD_PTR25]], i64 -1
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i8* [[ADD_PTR36]] to i32*
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; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
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; CHECK-NEXT: [[CMP7:%.*]] = icmp eq i32 [[TMP1]], [[SCAN_END:%.*]]
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; CHECK-NEXT: br i1 [[CMP7]], label [[DO_END:%.*]], label [[IF_THEN_LR_PH:%.*]]
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; CHECK: if.then.lr.ph:
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; CHECK-NEXT: br label [[IF_THEN:%.*]]
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; CHECK: do.body:
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; CHECK-NEXT: [[IDX_EXT:%.*]] = zext i32 [[TMP4:%.*]] to i64
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; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i8, i8* [[WIN]], i64 [[IDX_EXT1]]
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; CHECK-NEXT: [[ADD_PTR2:%.*]] = getelementptr inbounds i8, i8* [[ADD_PTR]], i64 -1
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; CHECK-NEXT: [[ADD_PTR3:%.*]] = getelementptr inbounds i8, i8* [[ADD_PTR2]], i64 [[IDX_EXT]]
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; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[ADD_PTR3]] to i32*
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; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP3]], [[SCAN_END]]
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; CHECK-NEXT: br i1 [[CMP]], label [[DO_END]], label [[IF_THEN]]
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; CHECK: if.then:
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; CHECK-NEXT: [[CUR_MATCH_ADDR_09:%.*]] = phi i32 [ [[CUR_MATCH]], [[IF_THEN_LR_PH]] ], [ [[TMP4]], [[DO_BODY:%.*]] ]
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; CHECK-NEXT: [[CHAIN_LENGTH_ADDR_08:%.*]] = phi i32 [ [[CHAIN_LENGTH:%.*]], [[IF_THEN_LR_PH]] ], [ [[DEC:%.*]], [[DO_BODY]] ]
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; CHECK-NEXT: [[AND:%.*]] = and i32 [[CUR_MATCH_ADDR_09]], [[WMASK:%.*]]
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; CHECK-NEXT: [[IDXPROM:%.*]] = zext i32 [[AND]] to i64
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[PREV:%.*]], i64 [[IDXPROM]]
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; CHECK-NEXT: [[TMP4]] = load i32, i32* [[ARRAYIDX]], align 4
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; CHECK-NEXT: [[CMP4:%.*]] = icmp ugt i32 [[TMP4]], [[LIMIT:%.*]]
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; CHECK-NEXT: br i1 [[CMP4]], label [[LAND_LHS_TRUE:%.*]], label [[DO_END]]
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; CHECK: land.lhs.true:
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; CHECK-NEXT: [[DEC]] = add i32 [[CHAIN_LENGTH_ADDR_08]], -1
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; CHECK-NEXT: [[CMP5:%.*]] = icmp eq i32 [[DEC]], 0
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; CHECK-NEXT: br i1 [[CMP5]], label [[DO_END]], label [[DO_BODY]]
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; CHECK: do.end:
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; CHECK-NEXT: [[CONT_0:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ 0, [[IF_THEN]] ], [ 0, [[LAND_LHS_TRUE]] ], [ 1, [[DO_BODY]] ]
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; CHECK-NEXT: ret i32 [[CONT_0]]
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;
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entry:
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%idx.ext2 = zext i32 %cur_match to i64
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%add.ptr4 = getelementptr inbounds i8, i8* %win, i64 %idx.ext2
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%idx.ext1 = zext i32 %best_len to i64
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%add.ptr25 = getelementptr inbounds i8, i8* %add.ptr4, i64 %idx.ext1
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%add.ptr36 = getelementptr inbounds i8, i8* %add.ptr25, i64 -1
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%0 = bitcast i8* %add.ptr36 to i32*
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%1 = load i32, i32* %0, align 4
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%cmp7 = icmp eq i32 %1, %scan_end
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br i1 %cmp7, label %do.end, label %if.then.lr.ph
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if.then.lr.ph: ; preds = %entry
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br label %if.then
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do.body: ; preds = %land.lhs.true
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%chain_length.addr.0 = phi i32 [ %dec, %land.lhs.true ]
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%cur_match.addr.0 = phi i32 [ %4, %land.lhs.true ]
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%idx.ext = zext i32 %cur_match.addr.0 to i64
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%add.ptr = getelementptr inbounds i8, i8* %win, i64 %idx.ext
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%add.ptr2 = getelementptr inbounds i8, i8* %add.ptr, i64 %idx.ext1
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%add.ptr3 = getelementptr inbounds i8, i8* %add.ptr2, i64 -1
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%2 = bitcast i8* %add.ptr3 to i32*
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%3 = load i32, i32* %2, align 4
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%cmp = icmp eq i32 %3, %scan_end
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br i1 %cmp, label %do.end, label %if.then
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if.then: ; preds = %if.then.lr.ph, %do.body
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%cur_match.addr.09 = phi i32 [ %cur_match, %if.then.lr.ph ], [ %cur_match.addr.0, %do.body ]
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%chain_length.addr.08 = phi i32 [ %chain_length, %if.then.lr.ph ], [ %chain_length.addr.0, %do.body ]
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%and = and i32 %cur_match.addr.09, %wmask
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%idxprom = zext i32 %and to i64
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%arrayidx = getelementptr inbounds i32, i32* %prev, i64 %idxprom
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%4 = load i32, i32* %arrayidx, align 4
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%cmp4 = icmp ugt i32 %4, %limit
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br i1 %cmp4, label %land.lhs.true, label %do.end
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land.lhs.true: ; preds = %if.then
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%dec = add i32 %chain_length.addr.08, -1
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%cmp5 = icmp eq i32 %dec, 0
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br i1 %cmp5, label %do.end, label %do.body
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do.end: ; preds = %do.body, %land.lhs.true, %if.then, %entry
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%cont.0 = phi i32 [ 1, %entry ], [ 0, %if.then ], [ 0, %land.lhs.true ], [ 1, %do.body ]
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ret i32 %cont.0
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}
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declare void @blackhole(<2 x i8*>)
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define void @PR37005(i8* %base, i8** %in) {
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; CHECK-LABEL: @PR37005(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[E2:%.*]] = getelementptr inbounds i8*, i8** [[IN:%.*]], i64 undef
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; CHECK-NEXT: [[E4:%.*]] = getelementptr inbounds i8*, i8** [[E2]], <2 x i64> <i64 0, i64 1>
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; CHECK-NEXT: [[PI1:%.*]] = ptrtoint <2 x i8**> [[E4]] to <2 x i64>
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; CHECK-NEXT: [[TMP0:%.*]] = lshr <2 x i64> [[PI1]], <i64 14, i64 14>
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; CHECK-NEXT: [[SL1:%.*]] = and <2 x i64> [[TMP0]], <i64 1125899906842496, i64 1125899906842496>
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; CHECK-NEXT: [[E51:%.*]] = getelementptr inbounds i8, i8* [[BASE:%.*]], i64 80
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; CHECK-NEXT: [[E6:%.*]] = getelementptr inbounds i8, i8* [[E51]], <2 x i64> [[SL1]]
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; CHECK-NEXT: call void @blackhole(<2 x i8*> [[E6]])
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %loop
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loop:
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%e1 = getelementptr inbounds i8*, i8** %in, i64 undef
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%e2 = getelementptr inbounds i8*, i8** %e1, i64 6
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%bc1 = bitcast i8** %e2 to <2 x i8*>*
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%e3 = getelementptr inbounds <2 x i8*>, <2 x i8*>* %bc1, i64 0, i64 0
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%e4 = getelementptr inbounds i8*, i8** %e3, <2 x i64> <i64 0, i64 1>
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%pi1 = ptrtoint <2 x i8**> %e4 to <2 x i64>
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%lr1 = lshr <2 x i64> %pi1, <i64 21, i64 21>
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%sl1 = shl nuw nsw <2 x i64> %lr1, <i64 7, i64 7>
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%e5 = getelementptr inbounds i8, i8* %base, <2 x i64> %sl1
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%e6 = getelementptr inbounds i8, <2 x i8*> %e5, i64 80
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call void @blackhole(<2 x i8*> %e6)
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br label %loop
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}
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define void @PR37005_2(i8* %base, i8** %in) {
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; CHECK-LABEL: @PR37005_2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[E2:%.*]] = getelementptr inbounds i8*, i8** [[IN:%.*]], i64 undef
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; CHECK-NEXT: [[PI1:%.*]] = ptrtoint i8** [[E2]] to i64
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; CHECK-NEXT: [[TMP0:%.*]] = lshr i64 [[PI1]], 14
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; CHECK-NEXT: [[SL1:%.*]] = and i64 [[TMP0]], 1125899906842496
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; CHECK-NEXT: [[E51:%.*]] = getelementptr inbounds i8, i8* [[BASE:%.*]], <2 x i64> <i64 80, i64 60>
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; CHECK-NEXT: [[E6:%.*]] = getelementptr inbounds i8, <2 x i8*> [[E51]], i64 [[SL1]]
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; CHECK-NEXT: call void @blackhole(<2 x i8*> [[E6]])
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %loop
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loop:
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%e1 = getelementptr inbounds i8*, i8** %in, i64 undef
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%e2 = getelementptr inbounds i8*, i8** %e1, i64 6
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%pi1 = ptrtoint i8** %e2 to i64
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%lr1 = lshr i64 %pi1, 21
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%sl1 = shl nuw nsw i64 %lr1, 7
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%e5 = getelementptr inbounds i8, i8* %base, i64 %sl1
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%e6 = getelementptr inbounds i8, i8* %e5, <2 x i64> <i64 80, i64 60>
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call void @blackhole(<2 x i8*> %e6)
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br label %loop
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}
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define void @PR37005_3(<2 x i8*> %base, i8** %in) {
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; CHECK-LABEL: @PR37005_3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[E2:%.*]] = getelementptr inbounds i8*, i8** [[IN:%.*]], i64 undef
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; CHECK-NEXT: [[E4:%.*]] = getelementptr inbounds i8*, i8** [[E2]], <2 x i64> <i64 0, i64 1>
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; CHECK-NEXT: [[PI1:%.*]] = ptrtoint <2 x i8**> [[E4]] to <2 x i64>
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; CHECK-NEXT: [[TMP0:%.*]] = lshr <2 x i64> [[PI1]], <i64 14, i64 14>
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; CHECK-NEXT: [[SL1:%.*]] = and <2 x i64> [[TMP0]], <i64 1125899906842496, i64 1125899906842496>
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; CHECK-NEXT: [[E5:%.*]] = getelementptr inbounds i8, <2 x i8*> [[BASE:%.*]], i64 80
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; CHECK-NEXT: [[E6:%.*]] = getelementptr inbounds i8, <2 x i8*> [[E5]], <2 x i64> [[SL1]]
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; CHECK-NEXT: call void @blackhole(<2 x i8*> [[E6]])
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %loop
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loop:
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%e1 = getelementptr inbounds i8*, i8** %in, i64 undef
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%e2 = getelementptr inbounds i8*, i8** %e1, i64 6
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%bc1 = bitcast i8** %e2 to <2 x i8*>*
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%e3 = getelementptr inbounds <2 x i8*>, <2 x i8*>* %bc1, i64 0, i64 0
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%e4 = getelementptr inbounds i8*, i8** %e3, <2 x i64> <i64 0, i64 1>
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%pi1 = ptrtoint <2 x i8**> %e4 to <2 x i64>
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%lr1 = lshr <2 x i64> %pi1, <i64 21, i64 21>
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%sl1 = shl nuw nsw <2 x i64> %lr1, <i64 7, i64 7>
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%e5 = getelementptr inbounds i8, <2 x i8*> %base, <2 x i64> %sl1
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%e6 = getelementptr inbounds i8, <2 x i8*> %e5, i64 80
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call void @blackhole(<2 x i8*> %e6)
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br label %loop
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}
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; This would crash because we did not expect to be able to constant fold a GEP.
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define void @PR51485(<2 x i64> %v) {
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; CHECK-LABEL: @PR51485(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[SL1:%.*]] = shl nuw nsw <2 x i64> [[V:%.*]], <i64 7, i64 7>
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; CHECK-NEXT: [[E6:%.*]] = getelementptr inbounds i8, i8* getelementptr (i8, i8* bitcast (void (<2 x i64>)* @PR51485 to i8*), i64 80), <2 x i64> [[SL1]]
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; CHECK-NEXT: call void @blackhole(<2 x i8*> [[E6]])
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %loop
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loop:
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%sl1 = shl nuw nsw <2 x i64> %v, <i64 7, i64 7>
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%e5 = getelementptr inbounds i8, i8* bitcast (void (<2 x i64>)* @PR51485 to i8*), <2 x i64> %sl1
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%e6 = getelementptr inbounds i8, <2 x i8*> %e5, i64 80
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call void @blackhole(<2 x i8*> %e6)
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br label %loop
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}
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; Avoid folding the GEP outside the loop to inside, and increasing loop
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; instruction count.
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define float @gep_cross_loop(i64* %_arg_, float* %_arg_3, float %_arg_8)
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; CHECK-LABEL: @gep_cross_loop(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load i64, i64* [[_ARG_:%.*]], align 8
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; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds float, float* [[_ARG_3:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: br label [[FOR_COND_I:%.*]]
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; CHECK: for.cond.i:
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; CHECK-NEXT: [[IDX:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[ADD11_I:%.*]], [[FOR_BODY_I:%.*]] ]
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; CHECK-NEXT: [[SUM:%.*]] = phi float [ 0.000000e+00, [[ENTRY]] ], [ [[ADD_I:%.*]], [[FOR_BODY_I]] ]
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; CHECK-NEXT: [[CMP:%.*]] = icmp ult i64 [[IDX]], 17
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY_I]], label [[FOR_COND_I_I_I_PREHEADER:%.*]]
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; CHECK: for.cond.i.i.i.preheader:
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; CHECK-NEXT: ret float [[SUM]]
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; CHECK: for.body.i:
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; CHECK-NEXT: [[ARRAYIDX_I84_I:%.*]] = getelementptr inbounds float, float* [[ADD_PTR]], i64 [[IDX]]
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; CHECK-NEXT: [[TMP1:%.*]] = load float, float* [[ARRAYIDX_I84_I]], align 4
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; CHECK-NEXT: [[ADD_I]] = fadd fast float [[SUM]], [[TMP1]]
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; CHECK-NEXT: [[ADD11_I]] = add nuw nsw i64 [[IDX]], 1
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; CHECK-NEXT: br label [[FOR_COND_I]]
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;
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{
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entry:
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%0 = load i64, i64* %_arg_, align 8
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%add.ptr = getelementptr inbounds float, float* %_arg_3, i64 %0
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br label %for.cond.i
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for.cond.i: ; preds = %for.body.i, %entry
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%idx = phi i64 [ 0, %entry ], [ %add11.i, %for.body.i ]
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%sum = phi float [ 0.000000e+00, %entry ], [ %add.i, %for.body.i ]
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%cmp = icmp ule i64 %idx, 16
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br i1 %cmp, label %for.body.i, label %for.cond.i.i.i.preheader
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for.cond.i.i.i.preheader: ; preds = %for.cond.i
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ret float %sum
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for.body.i: ; preds = %for.cond.i
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%arrayidx.i84.i = getelementptr inbounds float, float * %add.ptr, i64 %idx
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%1 = load float, float* %arrayidx.i84.i, align 4
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%add.i = fadd fast float %sum, %1
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%add11.i = add nsw i64 %idx, 1
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br label %for.cond.i
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}
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