mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
7c9c6ed761
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
60 lines
1.5 KiB
LLVM
60 lines
1.5 KiB
LLVM
; RUN: llc -O3 < %s -aarch64-atomic-cfg-tidy=0 -aarch64-gep-opt=false -verify-machineinstrs | FileCheck %s
|
|
target triple = "arm64-apple-ios"
|
|
|
|
; rdar://12462006
|
|
; CSE between "icmp reg reg" and "sub reg reg".
|
|
; Both can be in the same basic block or in different basic blocks.
|
|
define i8* @t1(i8* %base, i32* nocapture %offset, i32 %size) nounwind {
|
|
entry:
|
|
; CHECK-LABEL: t1:
|
|
; CHECK: subs
|
|
; CHECK-NOT: cmp
|
|
; CHECK-NOT: sub
|
|
; CHECK: b.ge
|
|
; CHECK: sub
|
|
; CHECK: sub
|
|
; CHECK-NOT: sub
|
|
; CHECK: ret
|
|
%0 = load i32, i32* %offset, align 4
|
|
%cmp = icmp slt i32 %0, %size
|
|
%s = sub nsw i32 %0, %size
|
|
br i1 %cmp, label %return, label %if.end
|
|
|
|
if.end:
|
|
%sub = sub nsw i32 %0, %size
|
|
%s2 = sub nsw i32 %s, %size
|
|
%s3 = sub nsw i32 %sub, %s2
|
|
store i32 %s3, i32* %offset, align 4
|
|
%add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub
|
|
br label %return
|
|
|
|
return:
|
|
%retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]
|
|
ret i8* %retval.0
|
|
}
|
|
|
|
; CSE between "icmp reg imm" and "sub reg imm".
|
|
define i8* @t2(i8* %base, i32* nocapture %offset) nounwind {
|
|
entry:
|
|
; CHECK-LABEL: t2:
|
|
; CHECK: subs
|
|
; CHECK-NOT: cmp
|
|
; CHECK-NOT: sub
|
|
; CHECK: b.lt
|
|
; CHECK-NOT: sub
|
|
; CHECK: ret
|
|
%0 = load i32, i32* %offset, align 4
|
|
%cmp = icmp slt i32 %0, 1
|
|
br i1 %cmp, label %return, label %if.end
|
|
|
|
if.end:
|
|
%sub = sub nsw i32 %0, 1
|
|
store i32 %sub, i32* %offset, align 4
|
|
%add.ptr = getelementptr inbounds i8, i8* %base, i32 %sub
|
|
br label %return
|
|
|
|
return:
|
|
%retval.0 = phi i8* [ %add.ptr, %if.end ], [ null, %entry ]
|
|
ret i8* %retval.0
|
|
}
|