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