80 lines
2.7 KiB
LLVM
80 lines
2.7 KiB
LLVM
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; RUN: opt -hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -S %s -o - | FileCheck %s
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; RUN: opt -hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-hardware-loop-phi=true -S %s -o - | FileCheck %s
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; RUN: opt -hardware-loops -force-hardware-loops=true -hardware-loop-decrement=1 -hardware-loop-counter-bitwidth=32 -force-nested-hardware-loop=true -S %s -o - | FileCheck %s
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; CHECK-LABEL: float_counter
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; CHECK-NOT: set.loop.iterations
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; CHECK-NOT: loop.decrement
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define void @float_counter(i32* nocapture %A, float %N) {
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entry:
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%cmp6 = fcmp ogt float %N, 0.000000e+00
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br i1 %cmp6, label %while.body, label %while.end
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while.body:
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%i.07 = phi i32 [ %inc, %while.body ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i32 %i.07
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store i32 %i.07, i32* %arrayidx, align 4
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%inc = add i32 %i.07, 1
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%conv = uitofp i32 %inc to float
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%cmp = fcmp olt float %conv, %N
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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; CHECK-LABEL: variant_counter
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; CHECK-NOT: set.loop.iterations
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; CHECK-NOT: loop.decrement
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define void @variant_counter(i32* nocapture %A, i32* nocapture readonly %B) {
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entry:
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%0 = load i32, i32* %B, align 4
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%cmp7 = icmp eq i32 %0, 0
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br i1 %cmp7, label %while.end, label %while.body
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while.body:
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%i.08 = phi i32 [ %inc, %while.body ], [ 0, %entry ]
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%arrayidx1 = getelementptr inbounds i32, i32* %A, i32 %i.08
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store i32 %i.08, i32* %arrayidx1, align 4
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%inc = add nuw i32 %i.08, 1
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%arrayidx = getelementptr inbounds i32, i32* %B, i32 %inc
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%1 = load i32, i32* %arrayidx, align 4
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%cmp = icmp ult i32 %inc, %1
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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; CHECK-LABEL: variant_counter2
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; CHECK-NOT: set.loop.iterations
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; CHECK-NOT: loop.decrement
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define void @variant_counter2(i8*, i8*, i64*) {
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%4 = icmp eq i8* %0, %1
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br i1 %4, label %9, label %5
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5: ; preds = %3
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%6 = getelementptr inbounds i64, i64* %2, i64 1
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%7 = load i64, i64* %6, align 8
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br label %10
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8: ; preds = %10
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store i64 %14, i64* %6, align 8
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br label %9
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9: ; preds = %8, %3
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ret void
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10: ; preds = %5, %10
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%11 = phi i64 [ %7, %5 ], [ %14, %10 ]
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%12 = phi i32 [ 0, %5 ], [ %15, %10 ]
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%13 = phi i8* [ %0, %5 ], [ %16, %10 ]
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%14 = shl nsw i64 %11, 4
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%15 = add nuw nsw i32 %12, 1
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%16 = getelementptr inbounds i8, i8* %13, i64 1
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%17 = icmp ugt i32 %12, 14
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%18 = icmp eq i8* %16, %1
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%19 = or i1 %18, %17
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br i1 %19, label %8, label %10
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}
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