91 lines
3.8 KiB
LLVM
91 lines
3.8 KiB
LLVM
; RUN: opt -S -force-vector-width=2 -force-vector-interleave=1 -loop-vectorize -verify-loop-info -simplifycfg < %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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; Test no-predication of instructions that are provably safe, e.g. dividing by
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; a non-zero constant.
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define void @test(i32* nocapture %asd, i32* nocapture %aud,
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i32* nocapture %asr, i32* nocapture %aur,
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i32* nocapture %asd0, i32* nocapture %aud0,
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i32* nocapture %asr0, i32* nocapture %aur0
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) {
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %if.end
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ret void
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; CHECK-LABEL: test
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; CHECK: vector.body:
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; CHECK: %{{.*}} = sdiv <2 x i32> %{{.*}}, <i32 11, i32 11>
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; CHECK: %{{.*}} = udiv <2 x i32> %{{.*}}, <i32 13, i32 13>
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; CHECK: %{{.*}} = srem <2 x i32> %{{.*}}, <i32 17, i32 17>
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; CHECK: %{{.*}} = urem <2 x i32> %{{.*}}, <i32 19, i32 19>
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; CHECK-NOT: %{{.*}} = sdiv <2 x i32> %{{.*}}, <i32 0, i32 0>
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; CHECK-NOT: %{{.*}} = udiv <2 x i32> %{{.*}}, <i32 0, i32 0>
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; CHECK-NOT: %{{.*}} = srem <2 x i32> %{{.*}}, <i32 0, i32 0>
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; CHECK-NOT: %{{.*}} = urem <2 x i32> %{{.*}}, <i32 0, i32 0>
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for.body: ; preds = %if.end, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %if.end ]
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%isd = getelementptr inbounds i32, i32* %asd, i64 %indvars.iv
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%iud = getelementptr inbounds i32, i32* %aud, i64 %indvars.iv
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%isr = getelementptr inbounds i32, i32* %asr, i64 %indvars.iv
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%iur = getelementptr inbounds i32, i32* %aur, i64 %indvars.iv
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%lsd = load i32, i32* %isd, align 4
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%lud = load i32, i32* %iud, align 4
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%lsr = load i32, i32* %isr, align 4
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%lur = load i32, i32* %iur, align 4
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%psd = add nsw i32 %lsd, 23
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%pud = add nsw i32 %lud, 24
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%psr = add nsw i32 %lsr, 25
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%pur = add nsw i32 %lur, 26
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%isd0 = getelementptr inbounds i32, i32* %asd0, i64 %indvars.iv
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%iud0 = getelementptr inbounds i32, i32* %aud0, i64 %indvars.iv
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%isr0 = getelementptr inbounds i32, i32* %asr0, i64 %indvars.iv
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%iur0 = getelementptr inbounds i32, i32* %aur0, i64 %indvars.iv
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%lsd0 = load i32, i32* %isd0, align 4
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%lud0 = load i32, i32* %iud0, align 4
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%lsr0 = load i32, i32* %isr0, align 4
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%lur0 = load i32, i32* %iur0, align 4
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%psd0 = add nsw i32 %lsd, 27
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%pud0 = add nsw i32 %lud, 28
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%psr0 = add nsw i32 %lsr, 29
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%pur0 = add nsw i32 %lur, 30
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%cmp1 = icmp slt i32 %lsd, 100
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br i1 %cmp1, label %if.then, label %if.end
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if.then: ; preds = %for.body
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%rsd = sdiv i32 %psd, 11
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%rud = udiv i32 %pud, 13
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%rsr = srem i32 %psr, 17
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%rur = urem i32 %pur, 19
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%rsd0 = sdiv i32 %psd0, 0
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%rud0 = udiv i32 %pud0, 0
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%rsr0 = srem i32 %psr0, 0
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%rur0 = urem i32 %pur0, 0
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br label %if.end
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if.end: ; preds = %if.then, %for.body
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%ysd.0 = phi i32 [ %rsd, %if.then ], [ %psd, %for.body ]
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%yud.0 = phi i32 [ %rud, %if.then ], [ %pud, %for.body ]
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%ysr.0 = phi i32 [ %rsr, %if.then ], [ %psr, %for.body ]
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%yur.0 = phi i32 [ %rur, %if.then ], [ %pur, %for.body ]
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%ysd0.0 = phi i32 [ %rsd0, %if.then ], [ %psd0, %for.body ]
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%yud0.0 = phi i32 [ %rud0, %if.then ], [ %pud0, %for.body ]
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%ysr0.0 = phi i32 [ %rsr0, %if.then ], [ %psr0, %for.body ]
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%yur0.0 = phi i32 [ %rur0, %if.then ], [ %pur0, %for.body ]
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store i32 %ysd.0, i32* %isd, align 4
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store i32 %yud.0, i32* %iud, align 4
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store i32 %ysr.0, i32* %isr, align 4
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store i32 %yur.0, i32* %iur, align 4
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store i32 %ysd0.0, i32* %isd0, align 4
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store i32 %yud0.0, i32* %iud0, align 4
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store i32 %ysr0.0, i32* %isr0, align 4
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store i32 %yur0.0, i32* %iur0, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 128
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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}
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