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llvm-mirror/test/CodeGen/X86/2005-01-17-CycleInDAG.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

18 lines
682 B
LLVM

; This testcase was distilled from 132.ijpeg. Bsaically we cannot fold the
; load into the sub instruction here as it induces a cycle in the dag, which
; is invalid code (there is no correct way to order the instruction). Check
; that we do not fold the load into the sub.
; RUN: llc < %s -march=x86 | not grep sub.*GLOBAL
@GLOBAL = external global i32 ; <i32*> [#uses=1]
define i32 @test(i32* %P1, i32* %P2, i32* %P3) nounwind {
%L = load i32, i32* @GLOBAL ; <i32> [#uses=1]
store i32 12, i32* %P2
%Y = load i32, i32* %P3 ; <i32> [#uses=1]
%Z = sub i32 %Y, %L ; <i32> [#uses=1]
ret i32 %Z
}