llvm-6502/test/CodeGen/X86/2012-11-28-merge-store-alias.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

53 lines
1.6 KiB
LLVM

; RUN: llc < %s -march=x86-64 -mcpu=corei7 -mtriple=x86_64-pc-win64 | FileCheck %s
; CHECK: merge_stores_can
; CHECK: callq foo
; CHECK-NEXT: xorps %xmm0, %xmm0
; CHECK-NEXT: movups %xmm0
; CHECK: callq foo
; CHECK: ret
declare i32 @foo([10 x i32]* )
define i32 @merge_stores_can() nounwind ssp {
%object1 = alloca [10 x i32]
%ret0 = call i32 @foo([10 x i32]* %object1) nounwind
%O1_1 = getelementptr [10 x i32], [10 x i32]* %object1, i64 0, i32 1
%O1_2 = getelementptr [10 x i32], [10 x i32]* %object1, i64 0, i32 2
%O1_3 = getelementptr [10 x i32], [10 x i32]* %object1, i64 0, i32 3
%O1_4 = getelementptr [10 x i32], [10 x i32]* %object1, i64 0, i32 4
%ld_ptr = getelementptr [10 x i32], [10 x i32]* %object1, i64 0, i32 9
store i32 0, i32* %O1_1
store i32 0, i32* %O1_2
%ret = load i32, i32* %ld_ptr ; <--- does not alias.
store i32 0, i32* %O1_3
store i32 0, i32* %O1_4
%ret1 = call i32 @foo([10 x i32]* %object1) nounwind
ret i32 %ret
}
; CHECK: merge_stores_cant
; CHECK-NOT: xorps %xmm0, %xmm0
; CHECK-NOT: movups %xmm0
; CHECK: ret
define i32 @merge_stores_cant([10 x i32]* %in0, [10 x i32]* %in1) nounwind ssp {
%O1_1 = getelementptr [10 x i32], [10 x i32]* %in1, i64 0, i32 1
%O1_2 = getelementptr [10 x i32], [10 x i32]* %in1, i64 0, i32 2
%O1_3 = getelementptr [10 x i32], [10 x i32]* %in1, i64 0, i32 3
%O1_4 = getelementptr [10 x i32], [10 x i32]* %in1, i64 0, i32 4
%ld_ptr = getelementptr [10 x i32], [10 x i32]* %in0, i64 0, i32 2
store i32 0, i32* %O1_1
store i32 0, i32* %O1_2
%ret = load i32, i32* %ld_ptr ; <--- may alias
store i32 0, i32* %O1_3
store i32 0, i32* %O1_4
ret i32 %ret
}