mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
207108d4a4
Dead code elimination during coalescing could cause a virtual register to be split into connected components. The following rewriting would be confused about the already joined copies present in the code, but without a corresponding value number in the live range. Erase all joined copies instantly when joining intervals such that the MI and LiveInterval representations are always in sync. llvm-svn: 157135
123 lines
4.3 KiB
LLVM
123 lines
4.3 KiB
LLVM
; RUN: llc < %s -verify-coalescing
|
|
; PR12892
|
|
;
|
|
; Dead code elimination during coalesing causes a live range to split into two
|
|
; virtual registers. Stale identity copies that had already been joined were
|
|
; interfering with the liveness computations.
|
|
|
|
target triple = "i386-pc-linux-gnu"
|
|
|
|
define void @_ZN4llvm17AsmMatcherEmitter3runERNS_11raw_ostreamE() align 2 {
|
|
invoke void @_ZNK4llvm13CodeGenTarget12getAsmParserEv()
|
|
to label %1 unwind label %5
|
|
|
|
; <label>:1 ; preds = %0
|
|
invoke void @_ZNK4llvm6Record16getValueAsStringENS_9StringRefE()
|
|
to label %4 unwind label %2
|
|
|
|
; <label>:2 ; preds = %1
|
|
%3 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
cleanup
|
|
unreachable
|
|
|
|
; <label>:4 ; preds = %1
|
|
invoke void @_ZN4llvm18isCurrentDebugTypeEPKc()
|
|
to label %12 unwind label %7
|
|
|
|
; <label>:5 ; preds = %0
|
|
%6 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
cleanup
|
|
br label %33
|
|
|
|
; <label>:7 ; preds = %4
|
|
%8 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
cleanup
|
|
br label %9
|
|
|
|
; <label>:9 ; preds = %28, %7
|
|
%10 = phi { i8*, i32 } [ %29, %28 ], [ %8, %7 ]
|
|
%11 = extractvalue { i8*, i32 } %10, 1
|
|
invoke fastcc void @_ZN12_GLOBAL__N_114AsmMatcherInfoD2Ev()
|
|
to label %32 unwind label %35
|
|
|
|
; <label>:12 ; preds = %4
|
|
invoke void @_ZNK4llvm13CodeGenTarget10getRegBankEv()
|
|
to label %13 unwind label %16
|
|
|
|
; <label>:13 ; preds = %12
|
|
br label %14
|
|
|
|
; <label>:14 ; preds = %20, %13
|
|
%15 = icmp eq i32 undef, 0
|
|
br i1 %15, label %20, label %18
|
|
|
|
; <label>:16 ; preds = %12
|
|
%17 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
cleanup
|
|
br label %26
|
|
|
|
; <label>:18 ; preds = %14
|
|
invoke void @_ZNSs4_Rep9_S_createEjjRKSaIcE()
|
|
to label %19 unwind label %21
|
|
|
|
; <label>:19 ; preds = %18
|
|
unreachable
|
|
|
|
; <label>:20 ; preds = %14
|
|
br label %14
|
|
|
|
; <label>:21 ; preds = %18
|
|
%22 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
cleanup
|
|
%23 = extractvalue { i8*, i32 } %22, 1
|
|
br i1 undef, label %26, label %24
|
|
|
|
; <label>:24 ; preds = %21
|
|
br i1 undef, label %25, label %26
|
|
|
|
; <label>:25 ; preds = %24
|
|
unreachable
|
|
|
|
; <label>:26 ; preds = %24, %21, %16
|
|
%27 = phi i32 [ 0, %16 ], [ %23, %21 ], [ %23, %24 ]
|
|
invoke void @_ZNSt6vectorISt4pairISsSsESaIS1_EED1Ev()
|
|
to label %28 unwind label %30
|
|
|
|
; <label>:28 ; preds = %26
|
|
%29 = insertvalue { i8*, i32 } undef, i32 %27, 1
|
|
br label %9
|
|
|
|
; <label>:30 ; preds = %26
|
|
%31 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
catch i8* null
|
|
unreachable
|
|
|
|
; <label>:32 ; preds = %9
|
|
br label %33
|
|
|
|
; <label>:33 ; preds = %32, %5
|
|
%34 = phi i32 [ undef, %5 ], [ %11, %32 ]
|
|
unreachable
|
|
|
|
; <label>:35 ; preds = %9
|
|
%36 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
|
|
catch i8* null
|
|
unreachable
|
|
}
|
|
|
|
declare void @_ZNK4llvm13CodeGenTarget12getAsmParserEv()
|
|
|
|
declare i32 @__gxx_personality_v0(...)
|
|
|
|
declare void @_ZNK4llvm6Record16getValueAsStringENS_9StringRefE()
|
|
|
|
declare void @_ZN4llvm18isCurrentDebugTypeEPKc()
|
|
|
|
declare fastcc void @_ZN12_GLOBAL__N_114AsmMatcherInfoD2Ev() unnamed_addr inlinehint align 2
|
|
|
|
declare hidden void @_ZNSt6vectorISt4pairISsSsESaIS1_EED1Ev() unnamed_addr align 2
|
|
|
|
declare void @_ZNSs4_Rep9_S_createEjjRKSaIcE()
|
|
|
|
declare void @_ZNK4llvm13CodeGenTarget10getRegBankEv()
|