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| # RUN: llc -start-after=machine-sink -stop-after=peephole-opt -mtriple=powerpc64-unknown-linux-gnu -o - %s | FileCheck %s
--- |
; ModuleID = '<stdin>'
source_filename = "<stdin>"
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; Function Attrs: nounwind readnone
declare i128 @llvm.cttz.i128(i128, i1) #0
define void @fn1(i128, i128, i1) {
top:
br label %loop
loop: ; preds = %loop, %top
%v = phi i128 [ %3, %loop ], [ %0, %top ]
%u = phi i128 [ %3, %loop ], [ %1, %top ]
%s = sub i128 %v, %u
%3 = call i128 @llvm.cttz.i128(i128 %s, i1 false)
br label %loop
}
; Function Attrs: nounwind
declare void @llvm.stackprotector(i8*, i8**) #1
attributes #0 = { nounwind readnone }
attributes #1 = { nounwind }
...
---
name: fn1
alignment: 4
exposesReturnsTwice: false
tracksRegLiveness: true
registers:
- { id: 0, class: g8rc }
- { id: 1, class: g8rc }
- { id: 2, class: g8rc }
- { id: 3, class: g8rc }
- { id: 4, class: g8rc }
- { id: 5, class: g8rc }
- { id: 6, class: g8rc }
- { id: 7, class: g8rc }
- { id: 8, class: g8rc }
- { id: 9, class: g8rc }
- { id: 10, class: g8rc }
- { id: 11, class: g8rc }
- { id: 12, class: g8rc }
- { id: 13, class: g8rc }
- { id: 14, class: g8rc }
- { id: 15, class: g8rc_and_g8rc_nox0 }
- { id: 16, class: g8rc_and_g8rc_nox0 }
- { id: 17, class: g8rc }
- { id: 18, class: g8rc }
- { id: 19, class: g8rc }
- { id: 20, class: g8rc }
- { id: 21, class: g8rc }
- { id: 22, class: g8rc }
- { id: 23, class: g8rc }
- { id: 24, class: g8rc }
- { id: 25, class: crrc }
- { id: 26, class: g8rc_and_g8rc_nox0 }
- { id: 27, class: g8rc_and_g8rc_nox0 }
liveins:
- { reg: '$x3', virtual-reg: '%6' }
- { reg: '$x4', virtual-reg: '%7' }
- { reg: '$x5', virtual-reg: '%8' }
- { reg: '$x6', virtual-reg: '%9' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
maxCallFrameSize: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
body: |
bb.0.top:
successors: %bb.1.loop
liveins: $x3, $x4, $x5, $x6
%9 = COPY $x6
%8 = COPY $x5
%7 = COPY $x4
%6 = COPY $x3
%14 = COPY %9
%13 = COPY %8
%12 = COPY %7
%11 = COPY %6
%21 = LI8 128
%23 = LI8 64
bb.1.loop:
successors: %bb.2.loop, %bb.4
%0 = PHI %11, %bb.0.top, %4, %bb.3.loop
%1 = PHI %12, %bb.0.top, %5, %bb.3.loop
%2 = PHI %13, %bb.0.top, %4, %bb.3.loop
%3 = PHI %14, %bb.0.top, %5, %bb.3.loop
%15 = SUBFC8 %3, %1, implicit-def $carry
%16 = SUBFE8 %2, %0, implicit-def dead $carry, implicit $carry
%17 = ADDI8 %16, -1
%18 = ADDI8 %15, -1
%19 = ANDC8 killed %17, %16
%20 = ANDC8 killed %18, %15
%22 = CNTLZD killed %19
%24 = CNTLZD killed %20
%25 = CMPLDI %15, 0
BCC 76, %25, %bb.2.loop
; CHECK: SUBFC8o %3, %1, implicit-def $carry, implicit-def $cr0
; CHECK: COPY killed $cr0
; CHECK: BCC
bb.4:
successors: %bb.3.loop
%27 = SUBF8 %24, %23
B %bb.3.loop
bb.2.loop:
successors: %bb.3.loop
%26 = SUBF8 %22, %21
bb.3.loop:
successors: %bb.1.loop
%5 = PHI %26, %bb.2.loop, %27, %bb.4
%4 = LI8 0
B %bb.1.loop
...
|