mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 18:29:46 +00:00
Fix PR4528. This scavenger assertion is too strict. The two-address value is
killed by another operand. There is probably a better fix. Either 1) scavenger can look at other operands, or 2) livevariables can be smarter about kill markers. Patches welcome. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78072 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
parent
7145e9be64
commit
7d35249e89
@ -267,7 +267,8 @@ void RegScavenger::forward() {
|
||||
unsigned UseIdx;
|
||||
if (MI->isRegTiedToUseOperand(Idx, &UseIdx) &&
|
||||
!MI->getOperand(UseIdx).isUndef()) {
|
||||
assert(isUsed(Reg) && "Using an undefined register!");
|
||||
assert(!MI->getOperand(UseIdx).isKill() &&
|
||||
"Using an undefined register!");
|
||||
continue;
|
||||
}
|
||||
|
||||
|
25
test/CodeGen/ARM/2009-08-04-RegScavengerAssert.ll
Normal file
25
test/CodeGen/ARM/2009-08-04-RegScavengerAssert.ll
Normal file
@ -0,0 +1,25 @@
|
||||
; RUN: llvm-as < %s | llc -mtriple=armv6-elf
|
||||
; PR4528
|
||||
|
||||
define arm_aapcscc i32 @file_read_actor(i32 %desc, i32 %page, i32 %offset, i32 %size) nounwind optsize {
|
||||
entry:
|
||||
br i1 undef, label %fault_in_pages_writeable.exit, label %bb5.i
|
||||
|
||||
bb5.i: ; preds = %entry
|
||||
%asmtmp.i = tail call i32 asm sideeffect "1:\09strbt\09$1,[$2]\0A2:\0A\09.section .fixup,\22ax\22\0A\09.align\092\0A3:\09mov\09$0, $3\0A\09b\092b\0A\09.previous\0A\09.section __ex_table,\22a\22\0A\09.align\093\0A\09.long\091b, 3b\0A\09.previous", "=r,r,r,i,0,~{cc}"(i8 0, i32 undef, i32 -14, i32 0) nounwind ; <i32> [#uses=1]
|
||||
br label %fault_in_pages_writeable.exit
|
||||
|
||||
fault_in_pages_writeable.exit: ; preds = %bb5.i, %entry
|
||||
%0 = phi i32 [ 0, %entry ], [ %asmtmp.i, %bb5.i ] ; <i32> [#uses=1]
|
||||
%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
|
||||
br i1 %1, label %bb2, label %bb3
|
||||
|
||||
bb2: ; preds = %fault_in_pages_writeable.exit
|
||||
unreachable
|
||||
|
||||
bb3: ; preds = %fault_in_pages_writeable.exit
|
||||
%2 = tail call arm_aapcscc i32 @__copy_to_user(i8* undef, i8* undef, i32 undef) nounwind ; <i32> [#uses=0]
|
||||
unreachable
|
||||
}
|
||||
|
||||
declare arm_aapcscc i32 @__copy_to_user(i8*, i8*, i32)
|
Loading…
Reference in New Issue
Block a user