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