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|
; RUN: opt -S -basicaa -licm < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Make sure the basic alloca pointer hoisting works:
; CHECK-LABEL: @test1
; CHECK: load i32, i32* %c, align 4
; CHECK: for.body:
; Function Attrs: nounwind uwtable
define void @test1(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%c = alloca i32
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%1 = load i32, i32* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%2 = load i32, i32* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
; Make sure the basic alloca pointer hoisting works through a bitcast to a
; pointer to a smaller type:
; CHECK-LABEL: @test2
; CHECK: load i32, i32* %c, align 4
; CHECK: for.body:
; Function Attrs: nounwind uwtable
define void @test2(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%ca = alloca i64
%c = bitcast i64* %ca to i32*
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%1 = load i32, i32* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%2 = load i32, i32* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
; Make sure the basic alloca pointer hoisting works through an addrspacecast
; CHECK-LABEL: @test2_addrspacecast
; CHECK: load i32, i32 addrspace(1)* %c, align 4
; CHECK: for.body:
; Function Attrs: nounwind uwtable
define void @test2_addrspacecast(i32 addrspace(1)* nocapture %a, i32 addrspace(1)* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%ca = alloca i64
%c = addrspacecast i64* %ca to i32 addrspace(1)*
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %a, i64 %indvars.iv
%0 = load i32, i32 addrspace(1)* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%1 = load i32, i32 addrspace(1)* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32 addrspace(1)* %b, i64 %indvars.iv
%2 = load i32, i32 addrspace(1)* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32 addrspace(1)* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
; Make sure the basic alloca pointer hoisting works through a bitcast to a
; pointer to a smaller type (where the bitcast also needs to be hoisted):
; CHECK-LABEL: @test3
; CHECK: load i32, i32* %c, align 4
; CHECK: for.body:
; Function Attrs: nounwind uwtable
define void @test3(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%ca = alloca i64
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%c = bitcast i64* %ca to i32*
%1 = load i32, i32* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%2 = load i32, i32* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
; Make sure the basic alloca pointer hoisting does not happen through a bitcast
; to a pointer to a larger type:
; CHECK-LABEL: @test4
; CHECK: for.body:
; CHECK: load i32, i32* %c, align 4
; Function Attrs: nounwind uwtable
define void @test4(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%ca = alloca i16
%c = bitcast i16* %ca to i32*
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%1 = load i32, i32* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%2 = load i32, i32* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
; Don't crash on bitcasts to unsized types.
; CHECK-LABEL: @test5
; CHECK: for.body:
; CHECK: load i32, i32* %c, align 4
%atype = type opaque
; Function Attrs: nounwind uwtable
define void @test5(i32* nocapture %a, i32* nocapture readonly %b, i32 %n) #0 {
entry:
%cmp6 = icmp sgt i32 %n, 0
%ca = alloca i16
%cab = bitcast i16* %ca to %atype*
%c = bitcast %atype* %cab to i32*
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.inc
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp1 = icmp sgt i32 %0, 0
br i1 %cmp1, label %if.then, label %for.inc
if.then: ; preds = %for.body
%1 = load i32, i32* %c, align 4
%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
%2 = load i32, i32* %arrayidx3, align 4
%mul = mul nsw i32 %2, %1
store i32 %mul, i32* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body, %if.then
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.inc, %entry
ret void
}
attributes #0 = { nounwind uwtable }
|
