mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-27 13:30:05 +00:00
b849e04d2b
GCC accepts 'cc' as an alias for 'cr0', and we need to do the same when processing inline asm constraints. This had previously been implemented using a non-allocatable register, named 'cc', that was listed as an alias of 'cr0', but the infrastructure does not seem to support this properly (neither the register allocator nor the scheduler properly accounts for the alias). Instead, we can just process this as a naming alias inside of the inline asm constraint-processing code, so we'll do that instead. There are two regression tests, one where the post-RA scheduler did the wrong thing with the non-allocatable alias, and one where the register allocator did the wrong thing. Fixes PR21742. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223708 91177308-0d34-0410-b5e6-96231b3b80d8
176 lines
7.2 KiB
LLVM
176 lines
7.2 KiB
LLVM
; RUN: llc -mcpu=pwr7 < %s | FileCheck %s
|
|
target datalayout = "E-m:e-i64:64-n32:64"
|
|
target triple = "powerpc64-unknown-linux-gnu"
|
|
|
|
; Function Attrs: nounwind
|
|
define void @jbd2_journal_commit_transaction() #0 {
|
|
entry:
|
|
br i1 undef, label %do.body, label %if.then5
|
|
|
|
if.then5: ; preds = %entry
|
|
unreachable
|
|
|
|
do.body: ; preds = %entry
|
|
br i1 undef, label %do.body.i, label %trace_jbd2_start_commit.exit
|
|
|
|
do.body.i: ; preds = %do.body
|
|
unreachable
|
|
|
|
trace_jbd2_start_commit.exit: ; preds = %do.body
|
|
br i1 undef, label %do.body.i1116, label %trace_jbd2_commit_locking.exit
|
|
|
|
do.body.i1116: ; preds = %trace_jbd2_start_commit.exit
|
|
unreachable
|
|
|
|
trace_jbd2_commit_locking.exit: ; preds = %trace_jbd2_start_commit.exit
|
|
br i1 undef, label %while.end, label %while.body.lr.ph
|
|
|
|
while.body.lr.ph: ; preds = %trace_jbd2_commit_locking.exit
|
|
unreachable
|
|
|
|
while.end: ; preds = %trace_jbd2_commit_locking.exit
|
|
br i1 undef, label %spin_unlock.exit1146, label %if.then.i.i.i.i1144
|
|
|
|
if.then.i.i.i.i1144: ; preds = %while.end
|
|
unreachable
|
|
|
|
spin_unlock.exit1146: ; preds = %while.end
|
|
br i1 undef, label %spin_unlock.exit1154, label %if.then.i.i.i.i1152
|
|
|
|
if.then.i.i.i.i1152: ; preds = %spin_unlock.exit1146
|
|
unreachable
|
|
|
|
spin_unlock.exit1154: ; preds = %spin_unlock.exit1146
|
|
br i1 undef, label %do.body.i1159, label %trace_jbd2_commit_flushing.exit
|
|
|
|
do.body.i1159: ; preds = %spin_unlock.exit1154
|
|
br i1 undef, label %if.end.i1166, label %do.body5.i1165
|
|
|
|
do.body5.i1165: ; preds = %do.body.i1159
|
|
unreachable
|
|
|
|
if.end.i1166: ; preds = %do.body.i1159
|
|
unreachable
|
|
|
|
trace_jbd2_commit_flushing.exit: ; preds = %spin_unlock.exit1154
|
|
br i1 undef, label %for.end.i, label %for.body.lr.ph.i
|
|
|
|
for.body.lr.ph.i: ; preds = %trace_jbd2_commit_flushing.exit
|
|
unreachable
|
|
|
|
for.end.i: ; preds = %trace_jbd2_commit_flushing.exit
|
|
br i1 undef, label %journal_submit_data_buffers.exit, label %if.then.i.i.i.i31.i
|
|
|
|
if.then.i.i.i.i31.i: ; preds = %for.end.i
|
|
br label %journal_submit_data_buffers.exit
|
|
|
|
journal_submit_data_buffers.exit: ; preds = %if.then.i.i.i.i31.i, %for.end.i
|
|
br i1 undef, label %if.end103, label %if.then102
|
|
|
|
if.then102: ; preds = %journal_submit_data_buffers.exit
|
|
unreachable
|
|
|
|
if.end103: ; preds = %journal_submit_data_buffers.exit
|
|
br i1 undef, label %do.body.i1182, label %trace_jbd2_commit_logging.exit
|
|
|
|
do.body.i1182: ; preds = %if.end103
|
|
br i1 undef, label %if.end.i1189, label %do.body5.i1188
|
|
|
|
do.body5.i1188: ; preds = %do.body5.i1188, %do.body.i1182
|
|
br i1 undef, label %if.end.i1189, label %do.body5.i1188
|
|
|
|
if.end.i1189: ; preds = %do.body5.i1188, %do.body.i1182
|
|
unreachable
|
|
|
|
trace_jbd2_commit_logging.exit: ; preds = %if.end103
|
|
br label %while.cond129.outer1451
|
|
|
|
while.cond129.outer1451: ; preds = %start_journal_io, %trace_jbd2_commit_logging.exit
|
|
br label %while.cond129
|
|
|
|
while.cond129: ; preds = %if.then135, %while.cond129.outer1451
|
|
br i1 undef, label %while.end246, label %if.then135
|
|
|
|
if.then135: ; preds = %while.cond129
|
|
br i1 undef, label %start_journal_io, label %while.cond129
|
|
|
|
start_journal_io: ; preds = %if.then135
|
|
br label %while.cond129.outer1451
|
|
|
|
while.end246: ; preds = %while.cond129
|
|
br i1 undef, label %for.end.i1287, label %for.body.i1277
|
|
|
|
for.body.i1277: ; preds = %while.end246
|
|
unreachable
|
|
|
|
for.end.i1287: ; preds = %while.end246
|
|
br i1 undef, label %journal_finish_inode_data_buffers.exit, label %if.then.i.i.i.i84.i
|
|
|
|
if.then.i.i.i.i84.i: ; preds = %for.end.i1287
|
|
unreachable
|
|
|
|
journal_finish_inode_data_buffers.exit: ; preds = %for.end.i1287
|
|
br i1 undef, label %if.end256, label %if.then249
|
|
|
|
if.then249: ; preds = %journal_finish_inode_data_buffers.exit
|
|
unreachable
|
|
|
|
if.end256: ; preds = %journal_finish_inode_data_buffers.exit
|
|
br label %while.body318
|
|
|
|
while.body318: ; preds = %wait_on_buffer.exit, %if.end256
|
|
br i1 undef, label %wait_on_buffer.exit, label %if.then.i1296
|
|
|
|
if.then.i1296: ; preds = %while.body318
|
|
br label %wait_on_buffer.exit
|
|
|
|
wait_on_buffer.exit: ; preds = %if.then.i1296, %while.body318
|
|
br i1 undef, label %do.body378, label %while.body318
|
|
|
|
do.body378: ; preds = %wait_on_buffer.exit
|
|
br i1 undef, label %while.end418, label %while.body392.lr.ph
|
|
|
|
while.body392.lr.ph: ; preds = %do.body378
|
|
br label %while.body392
|
|
|
|
while.body392: ; preds = %wait_on_buffer.exit1319, %while.body392.lr.ph
|
|
%0 = load i8** undef, align 8
|
|
%add.ptr399 = getelementptr inbounds i8* %0, i64 -72
|
|
%b_state.i.i1314 = bitcast i8* %add.ptr399 to i64*
|
|
%tobool.i1316 = icmp eq i64 undef, 0
|
|
br i1 %tobool.i1316, label %wait_on_buffer.exit1319, label %if.then.i1317
|
|
|
|
if.then.i1317: ; preds = %while.body392
|
|
unreachable
|
|
|
|
wait_on_buffer.exit1319: ; preds = %while.body392
|
|
%1 = load volatile i64* %b_state.i.i1314, align 8
|
|
%conv.i.i1322 = and i64 %1, 1
|
|
%lnot404 = icmp eq i64 %conv.i.i1322, 0
|
|
%.err.4 = select i1 %lnot404, i32 -5, i32 undef
|
|
%2 = call i64 asm sideeffect "1:.long 0x7c0000a8 $| ((($0) & 0x1f) << 21) $| (((0) & 0x1f) << 16) $| ((($3) & 0x1f) << 11) $| (((0) & 0x1) << 0) \0Aandc $0,$0,$2\0Astdcx. $0,0,$3\0Abne- 1b\0A", "=&r,=*m,r,r,*m,~{cc},~{memory}"(i64* %b_state.i.i1314, i64 262144, i64* %b_state.i.i1314, i64* %b_state.i.i1314) #0
|
|
store i8* %0, i8** undef, align 8
|
|
%cmp.i1312 = icmp eq i32* undef, undef
|
|
br i1 %cmp.i1312, label %while.end418, label %while.body392
|
|
|
|
while.end418: ; preds = %wait_on_buffer.exit1319, %do.body378
|
|
%err.4.lcssa = phi i32 [ undef, %do.body378 ], [ %.err.4, %wait_on_buffer.exit1319 ]
|
|
%tobool419 = icmp eq i32 %err.4.lcssa, 0
|
|
br i1 %tobool419, label %if.end421, label %if.then420
|
|
|
|
; CHECK-LABEL: @jbd2_journal_commit_transaction
|
|
; CHECK: andi.
|
|
; CHECK: cror [[REG:[0-9]+]], 1, 1
|
|
; CHECK: stdcx.
|
|
; CHECK: isel {{[0-9]+}}, {{[0-9]+}}, {{[0-9]+}}, [[REG]]
|
|
|
|
if.then420: ; preds = %while.end418
|
|
unreachable
|
|
|
|
if.end421: ; preds = %while.end418
|
|
unreachable
|
|
}
|
|
|
|
attributes #0 = { nounwind }
|
|
|