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llvm-mirror/test/Transforms/InstCombine/2003-07-21-ExternalConstant.ll
David Blaikie ab043ff680 [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

llvm-svn: 230794
2015-02-27 21:17:42 +00:00

45 lines
1.2 KiB
LLVM

;
; Test: ExternalConstant
;
; Description:
; This regression test helps check whether the instruction combining
; optimization pass correctly handles global variables which are marked
; as external and constant.
;
; If a problem occurs, we should die on an assert(). Otherwise, we
; should pass through the optimizer without failure.
;
; Extra code:
; RUN: opt < %s -instcombine
; END.
target datalayout = "e-p:32:32"
@silly = external constant i32 ; <i32*> [#uses=1]
declare void @bzero(i8*, i32)
declare void @bcopy(i8*, i8*, i32)
declare i32 @bcmp(i8*, i8*, i32)
declare i32 @fputs(i8*, i8*)
declare i32 @fputs_unlocked(i8*, i8*)
define i32 @function(i32 %a.1) {
entry:
%a.0 = alloca i32 ; <i32*> [#uses=2]
%result = alloca i32 ; <i32*> [#uses=2]
store i32 %a.1, i32* %a.0
%tmp.0 = load i32, i32* %a.0 ; <i32> [#uses=1]
%tmp.1 = load i32, i32* @silly ; <i32> [#uses=1]
%tmp.2 = add i32 %tmp.0, %tmp.1 ; <i32> [#uses=1]
store i32 %tmp.2, i32* %result
br label %return
return: ; preds = %entry
%tmp.3 = load i32, i32* %result ; <i32> [#uses=1]
ret i32 %tmp.3
}