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
74 lines
3.1 KiB
LLVM
74 lines
3.1 KiB
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
|
|
|
|
; In PR17073 ( http://llvm.org/pr17073 ), we illegally hoisted an operation that can trap.
|
|
; The first test confirms that we don't do that when the trapping op is reached by the current BB (block1).
|
|
; The second test confirms that we don't do that when the trapping op is reached by the previous BB (entry).
|
|
; The third test confirms that we can still do this optimization for an operation (add) that doesn't trap.
|
|
; The tests must be complicated enough to prevent previous SimplifyCFG actions from optimizing away
|
|
; the instructions that we're checking for.
|
|
|
|
target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
|
|
target triple = "i386-apple-macosx10.9.0"
|
|
|
|
@a = common global i32 0, align 4
|
|
@b = common global i8 0, align 1
|
|
|
|
; CHECK-LABEL: can_trap1
|
|
; CHECK-NOT: or i1 %tobool, icmp eq (i32* bitcast (i8* @b to i32*), i32* @a)
|
|
; CHECK-NOT: select i1 %tobool, i32* null, i32* select (i1 icmp eq (i64 urem (i64 2, i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64)), i64 0), i32* null, i32* @a)
|
|
define i32* @can_trap1() {
|
|
entry:
|
|
%0 = load i32, i32* @a, align 4
|
|
%tobool = icmp eq i32 %0, 0
|
|
br i1 %tobool, label %exit, label %block1
|
|
|
|
block1:
|
|
br i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a), label %exit, label %block2
|
|
|
|
block2:
|
|
br label %exit
|
|
|
|
exit:
|
|
%storemerge = phi i32* [ null, %entry ],[ null, %block2 ], [ select (i1 icmp eq (i64 urem (i64 2, i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64)), i64 0), i32* null, i32* @a), %block1 ]
|
|
ret i32* %storemerge
|
|
}
|
|
|
|
; CHECK-LABEL: can_trap2
|
|
; CHECK-NOT: or i1 %tobool, icmp eq (i32* bitcast (i8* @b to i32*), i32* @a)
|
|
; CHECK-NOT: select i1 %tobool, i32* select (i1 icmp eq (i64 urem (i64 2, i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64)), i64 0), i32* null, i32* @a), i32* null
|
|
define i32* @can_trap2() {
|
|
entry:
|
|
%0 = load i32, i32* @a, align 4
|
|
%tobool = icmp eq i32 %0, 0
|
|
br i1 %tobool, label %exit, label %block1
|
|
|
|
block1:
|
|
br i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a), label %exit, label %block2
|
|
|
|
block2:
|
|
br label %exit
|
|
|
|
exit:
|
|
%storemerge = phi i32* [ select (i1 icmp eq (i64 urem (i64 2, i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64)), i64 0), i32* null, i32* @a), %entry ],[ null, %block2 ], [ null, %block1 ]
|
|
ret i32* %storemerge
|
|
}
|
|
|
|
; CHECK-LABEL: cannot_trap
|
|
; CHECK: select i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a), i32* select (i1 icmp eq (i64 add (i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64), i64 2), i64 0), i32* null, i32* @a), i32* null
|
|
define i32* @cannot_trap() {
|
|
entry:
|
|
%0 = load i32, i32* @a, align 4
|
|
%tobool = icmp eq i32 %0, 0
|
|
br i1 %tobool, label %exit, label %block1
|
|
|
|
block1:
|
|
br i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a), label %exit, label %block2
|
|
|
|
block2:
|
|
br label %exit
|
|
|
|
exit:
|
|
%storemerge = phi i32* [ null, %entry ],[ null, %block2 ], [ select (i1 icmp eq (i64 add (i64 2, i64 zext (i1 icmp eq (i32* bitcast (i8* @b to i32*), i32* @a) to i64)), i64 0), i32* null, i32* @a), %block1 ]
|
|
ret i32* %storemerge
|
|
}
|