310 lines
11 KiB
LLVM
310 lines
11 KiB
LLVM
; RUN: opt -analyze -scalar-evolution < %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 void @f_sadd_0(i8* %a) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_0
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body> U: [0,16) S: [0,16)
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap() #2, !nosanitize !{}
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unreachable, !nosanitize !{}
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cmp = icmp slt i32 %tmp2, 16
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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; CHECK: Loop %for.body: max backedge-taken count is 15
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}
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define void @f_sadd_1(i8* %a) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_1
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {0,+,1}<%for.body> U: [0,16) S: [0,16)
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; SCEV can prove <nsw> for the above induction variable; but it does
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; not bother so before it sees the sext below since it is not a 100%
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; obvious.
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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br label %cont
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cmp = icmp slt i32 %tmp2, 16
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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; CHECK: Loop %for.body: max backedge-taken count is 15
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}
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define void @f_sadd_2(i8* %a, i1* %c) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_2
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {0,+,1}<%for.body>
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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br label %cont
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cond = load volatile i1, i1* %c
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br i1 %cond, label %for.body, label %for.cond.cleanup
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}
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define void @f_sadd_3(i8* %a, i1* %c) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_3
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %for.body ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body>
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %for.body ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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br i1 %tmp1, label %trap, label %for.body, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap() #2, !nosanitize !{}
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unreachable, !nosanitize !{}
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}
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define void @f_sadd_4(i8* %a, i1* %c) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_4
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %merge ]
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; CHECK-NEXT: --> {0,+,1}<nuw><nsw><%for.body>
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %merge ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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br i1 %tmp1, label %notrap, label %merge
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notrap:
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br label %merge
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merge:
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%tmp3 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp3, label %trap, label %for.body, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap() #2, !nosanitize !{}
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unreachable, !nosanitize !{}
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}
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define void @f_sadd_may_overflow(i8* %a, i1* %c) {
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; CHECK-LABEL: Classifying expressions for: @f_sadd_may_overflow
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp1, %cont ]
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; CHECK-NEXT: --> {0,+,1}<%for.body> U: full-set S: full-set
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%i.04 = phi i32 [ 0, %entry ], [ %tmp1, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 %i.04, i32 1)
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%cond1 = load volatile i1, i1* %c
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br i1 %cond1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap() #2, !nosanitize !{}
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unreachable, !nosanitize !{}
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cont: ; preds = %for.body
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%tmp1 = extractvalue { i32, i1 } %tmp0, 0
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%cond = load volatile i1, i1* %c
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br i1 %cond, label %for.body, label %for.cond.cleanup
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}
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define void @f_uadd(i8* %a) {
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; CHECK-LABEL: Classifying expressions for: @f_uadd
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {0,+,1}<nuw><%for.body> U: [0,16) S: [0,16)
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%i.04 = phi i32 [ 0, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap(), !nosanitize !{}
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unreachable, !nosanitize !{}
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cmp = icmp slt i32 %tmp2, 16
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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; CHECK: Loop %for.body: max backedge-taken count is 15
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}
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define void @f_ssub(i8* nocapture %a) {
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; CHECK-LABEL: Classifying expressions for: @f_ssub
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 15, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {15,+,-1}<%for.body> U: [0,16) S: [0,16)
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%i.04 = phi i32 [ 15, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap(), !nosanitize !{}
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unreachable, !nosanitize !{}
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cmp = icmp sgt i32 %tmp2, -1
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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; CHECK: Loop %for.body: max backedge-taken count is 15
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}
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define void @f_usub(i8* nocapture %a) {
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; CHECK-LABEL: Classifying expressions for: @f_usub
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %cont
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ret void
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for.body: ; preds = %entry, %cont
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; CHECK: %i.04 = phi i32 [ 15, %entry ], [ %tmp2, %cont ]
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; CHECK-NEXT: --> {15,+,-1}<%for.body> U: [0,16) S: [0,16)
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%i.04 = phi i32 [ 15, %entry ], [ %tmp2, %cont ]
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%idxprom = sext i32 %i.04 to i64
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%arrayidx = getelementptr inbounds i8, i8* %a, i64 %idxprom
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store i8 0, i8* %arrayidx, align 1
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%tmp0 = tail call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %i.04, i32 1)
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%tmp1 = extractvalue { i32, i1 } %tmp0, 1
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br i1 %tmp1, label %trap, label %cont, !nosanitize !{}
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trap: ; preds = %for.body
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tail call void @llvm.trap(), !nosanitize !{}
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unreachable, !nosanitize !{}
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cont: ; preds = %for.body
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%tmp2 = extractvalue { i32, i1 } %tmp0, 0
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%cmp = icmp sgt i32 %tmp2, -1
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br i1 %cmp, label %for.body, label %for.cond.cleanup
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; CHECK: Loop %for.body: max backedge-taken count is 15
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}
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define i32 @f_smul(i32 %val_a, i32 %val_b) {
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; CHECK-LABEL: Classifying expressions for: @f_smul
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%agg = tail call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %val_a, i32 %val_b)
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; CHECK: %mul = extractvalue { i32, i1 } %agg, 0
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; CHECK-NEXT: --> (%val_a * %val_b) U: full-set S: full-set
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%mul = extractvalue { i32, i1 } %agg, 0
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ret i32 %mul
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}
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define i32 @f_umul(i32 %val_a, i32 %val_b) {
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; CHECK-LABEL: Classifying expressions for: @f_umul
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%agg = tail call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %val_a, i32 %val_b)
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; CHECK: %mul = extractvalue { i32, i1 } %agg, 0
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; CHECK-NEXT: --> (%val_a * %val_b) U: full-set S: full-set
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%mul = extractvalue { i32, i1 } %agg, 0
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ret i32 %mul
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}
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declare { i32, i1 } @llvm.sadd.with.overflow.i32(i32, i32) nounwind readnone
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declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) nounwind readnone
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declare { i32, i1 } @llvm.ssub.with.overflow.i32(i32, i32) nounwind readnone
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declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone
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declare { i32, i1 } @llvm.smul.with.overflow.i32(i32, i32) nounwind readnone
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declare { i32, i1 } @llvm.umul.with.overflow.i32(i32, i32) nounwind readnone
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declare void @llvm.trap() #2
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