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; RUN: llc < %s | FileCheck %s
;
; Test LSR's ability to prune formulae that refer to nonexistant
; AddRecs in other loops.
;
; Unable to reduce this case further because it requires LSR to exceed
; ComplexityLimit.
;
; We really just want to ensure that LSR can process this loop without
; finding an unsatisfactory solution and bailing out. I've added
; dummyout, an obvious candidate for postinc replacement so we can
; verify that LSR removes it.
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin"
; CHECK: @test
; CHECK: # %for.body{{$}}
; dummyiv copy should be removed
; CHECK-NOT: movq
; CHECK: # %for.cond19.preheader
; dummycnt should be removed
; CHECK-NOT: incq
; CHECK: # %for.body23{{$}}
define i64 @test(i64 %count, float* nocapture %srcrow, i32* nocapture %destrow) nounwind uwtable ssp {
entry:
%cmp34 = icmp eq i64 %count, 0
br i1 %cmp34, label %for.end29, label %for.body
for.body: ; preds = %entry, %for.body
%dummyiv = phi i64 [ %dummycnt, %for.body ], [ 0, %entry ]
%indvars.iv39 = phi i64 [ %indvars.iv.next40, %for.body ], [ 0, %entry ]
%dp.036 = phi i32* [ %add.ptr, %for.body ], [ %destrow, %entry ]
%p.035 = phi float* [ %incdec.ptr4, %for.body ], [ %srcrow, %entry ]
%incdec.ptr = getelementptr inbounds float* %p.035, i64 1
%0 = load float* %incdec.ptr, align 4
%incdec.ptr2 = getelementptr inbounds float* %p.035, i64 2
%1 = load float* %incdec.ptr2, align 4
%incdec.ptr3 = getelementptr inbounds float* %p.035, i64 3
%2 = load float* %incdec.ptr3, align 4
%incdec.ptr4 = getelementptr inbounds float* %p.035, i64 4
%3 = load float* %incdec.ptr4, align 4
%4 = load i32* %dp.036, align 4
%conv5 = fptoui float %0 to i32
%or = or i32 %4, %conv5
%arrayidx6 = getelementptr inbounds i32* %dp.036, i64 1
%5 = load i32* %arrayidx6, align 4
%conv7 = fptoui float %1 to i32
%or8 = or i32 %5, %conv7
%arrayidx9 = getelementptr inbounds i32* %dp.036, i64 2
%6 = load i32* %arrayidx9, align 4
%conv10 = fptoui float %2 to i32
%or11 = or i32 %6, %conv10
%arrayidx12 = getelementptr inbounds i32* %dp.036, i64 3
%7 = load i32* %arrayidx12, align 4
%conv13 = fptoui float %3 to i32
%or14 = or i32 %7, %conv13
store i32 %or, i32* %dp.036, align 4
store i32 %or8, i32* %arrayidx6, align 4
store i32 %or11, i32* %arrayidx9, align 4
store i32 %or14, i32* %arrayidx12, align 4
%add.ptr = getelementptr inbounds i32* %dp.036, i64 4
%indvars.iv.next40 = add i64 %indvars.iv39, 4
%dummycnt = add i64 %dummyiv, 1
%cmp = icmp ult i64 %indvars.iv.next40, %count
br i1 %cmp, label %for.body, label %for.cond19.preheader
for.cond19.preheader: ; preds = %for.body
%dummyout = add i64 %dummyiv, 1
%rem = and i64 %count, 3
%cmp2130 = icmp eq i64 %rem, 0
br i1 %cmp2130, label %for.end29, label %for.body23.lr.ph
for.body23.lr.ph: ; preds = %for.cond19.preheader
%8 = and i64 %count, 3
br label %for.body23
for.body23: ; preds = %for.body23, %for.body23.lr.ph
%indvars.iv = phi i64 [ 0, %for.body23.lr.ph ], [ %indvars.iv.next, %for.body23 ]
%dp.132 = phi i32* [ %add.ptr, %for.body23.lr.ph ], [ %incdec.ptr28, %for.body23 ]
%p.131 = phi float* [ %incdec.ptr4, %for.body23.lr.ph ], [ %incdec.ptr24, %for.body23 ]
%incdec.ptr24 = getelementptr inbounds float* %p.131, i64 1
%9 = load float* %incdec.ptr24, align 4
%10 = load i32* %dp.132, align 4
%conv25 = fptoui float %9 to i32
%or26 = or i32 %10, %conv25
store i32 %or26, i32* %dp.132, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%incdec.ptr28 = getelementptr inbounds i32* %dp.132, i64 1
%exitcond = icmp eq i64 %indvars.iv.next, %8
br i1 %exitcond, label %for.end29, label %for.body23
for.end29: ; preds = %entry, %for.body23, %for.cond19.preheader
%result = phi i64 [ 0, %entry ], [ %dummyout, %for.body23 ], [ %dummyout, %for.cond19.preheader ]
ret i64 %result
}
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