llvm-6502/test/Transforms/LICM/hoist-bitcast-load.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00

240 lines
8.7 KiB
LLVM

; 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 }