mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-21 18:29:45 +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
45 lines
1.4 KiB
LLVM
45 lines
1.4 KiB
LLVM
; RUN: opt < %s -S -loop-unroll -unroll-threshold=50 | FileCheck %s
|
|
|
|
; Make sure this loop is completely unrolled...
|
|
; CHECK-LABEL: @test1
|
|
; CHECK: for.body:
|
|
; CHECK-NOT: for.end:
|
|
|
|
define i32 @test1(i32* nocapture %a) nounwind uwtable readonly {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
|
|
%sum.01 = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
|
%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
|
|
%0 = load i32, i32* %arrayidx, align 4
|
|
|
|
; This loop will be completely unrolled, even with these extra instructions,
|
|
; but only because they're ephemeral (and, thus, free).
|
|
%1 = add nsw i32 %0, 2
|
|
%2 = add nsw i32 %1, 4
|
|
%3 = add nsw i32 %2, 4
|
|
%4 = add nsw i32 %3, 4
|
|
%5 = add nsw i32 %4, 4
|
|
%6 = add nsw i32 %5, 4
|
|
%7 = add nsw i32 %6, 4
|
|
%8 = add nsw i32 %7, 4
|
|
%9 = add nsw i32 %8, 4
|
|
%10 = add nsw i32 %9, 4
|
|
%ca = icmp sgt i32 %10, -7
|
|
call void @llvm.assume(i1 %ca)
|
|
|
|
%add = add nsw i32 %0, %sum.01
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, 5
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body
|
|
ret i32 %add
|
|
}
|
|
|
|
declare void @llvm.assume(i1) nounwind
|
|
|