derek.holloway
7502bf64a4
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237 lines
8.6 KiB
LLVM
237 lines
8.6 KiB
LLVM
; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop-mssa(loop-simplifycfg,licm)' -S < %s | FileCheck %s
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; RUN: opt -S -passes=licm -verify-memoryssa < %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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; Make sure the basic alloca pointer hoisting works:
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; CHECK-LABEL: @test1
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; CHECK: load i32, ptr %c, align 4
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; CHECK: for.body:
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; Function Attrs: nounwind uwtable
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define void @test1(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%c = alloca i32
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr %c, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv
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%2 = load i32, ptr %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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; Make sure the basic alloca pointer hoisting works through a bitcast to a
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; pointer to a smaller type:
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; CHECK-LABEL: @test2
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; CHECK: load i32, ptr %ca, align 4
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; CHECK: for.body:
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; Function Attrs: nounwind uwtable
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define void @test2(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%ca = alloca i64
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr %ca, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv
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%2 = load i32, ptr %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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; Make sure the basic alloca pointer hoisting works through an addrspacecast
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; CHECK-LABEL: @test2_addrspacecast
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; CHECK: load i32, ptr addrspace(1) %c, align 4
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; CHECK: for.body:
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; Function Attrs: nounwind uwtable
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define void @test2_addrspacecast(ptr addrspace(1) nocapture %a, ptr addrspace(1) nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%ca = alloca i64
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%c = addrspacecast ptr %ca to ptr addrspace(1)
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr addrspace(1) %a, i64 %indvars.iv
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%0 = load i32, ptr addrspace(1) %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr addrspace(1) %c, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr addrspace(1) %b, i64 %indvars.iv
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%2 = load i32, ptr addrspace(1) %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr addrspace(1) %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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; Make sure the basic alloca pointer hoisting works through a bitcast to a
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; pointer to a smaller type (where the bitcast also needs to be hoisted):
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; CHECK-LABEL: @test3
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; CHECK: load i32, ptr %ca, align 4
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; CHECK: for.body:
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; Function Attrs: nounwind uwtable
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define void @test3(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%ca = alloca i64
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr %ca, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv
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%2 = load i32, ptr %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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; Make sure the basic alloca pointer hoisting does not happen through a bitcast
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; to a pointer to a larger type:
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; CHECK-LABEL: @test4
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; CHECK: for.body:
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; CHECK: load i32, ptr %ca, align 4
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; Function Attrs: nounwind uwtable
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define void @test4(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%ca = alloca i16
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr %ca, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv
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%2 = load i32, ptr %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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; Don't crash on bitcasts to unsized types.
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; CHECK-LABEL: @test5
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; CHECK: for.body:
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; CHECK: load i32, ptr %ca, align 4
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%atype = type opaque
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; Function Attrs: nounwind uwtable
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define void @test5(ptr nocapture %a, ptr nocapture readonly %b, i32 %n) #0 {
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entry:
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%cmp6 = icmp sgt i32 %n, 0
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%ca = alloca i16
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br i1 %cmp6, label %for.body, label %for.end
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for.body: ; preds = %entry, %for.inc
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%arrayidx = getelementptr inbounds i32, ptr %a, i64 %indvars.iv
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%0 = load i32, ptr %arrayidx, align 4
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%cmp1 = icmp sgt i32 %0, 0
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br i1 %cmp1, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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%1 = load i32, ptr %ca, align 4
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%arrayidx3 = getelementptr inbounds i32, ptr %b, i64 %indvars.iv
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%2 = load i32, ptr %arrayidx3, align 4
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%mul = mul nsw i32 %2, %1
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store i32 %mul, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, %n
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc, %entry
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ret void
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}
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attributes #0 = { nounwind uwtable }
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