llvm/test/Transforms/SimplifyCFG/speculate-with-offset.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

95 lines
2.7 KiB
LLVM

; RUN: opt -simplifycfg -S < %s | FileCheck %s
; This load is safe to speculate, as it's from a safe offset
; within an alloca.
; CHECK-LABEL: @yes(
; CHECK-NOT: br
define void @yes(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*], [4 x i64*]* %a, i64 0, i64 3
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64*, i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no0(
; CHECK: br i1 %c
define void @no0(i1 %c) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*], [4 x i64*]* %a, i64 0, i64 4
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64*, i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no1(
; CHECK: br i1 %c
define void @no1(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*], [4 x i64*]* %a, i64 0, i64 %n
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64*, i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
; CHECK-LABEL: @no2(
; CHECK: br i1 %c
define void @no2(i1 %c, i64 %n) nounwind {
entry:
%a = alloca [4 x i64*], align 8
%__a.addr = getelementptr [4 x i64*], [4 x i64*]* %a, i64 1, i64 0
call void @frob(i64** %__a.addr)
br i1 %c, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp5 = load i64*, i64** %__a.addr, align 8
br label %return
return: ; preds = %if.end, %if.then
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
ret void
}
declare void @frob(i64** nocapture %p)