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[DebugInfo] Examine all uses of isDebugValue() for debug instructions.

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Because we create a new kind of debug instruction, DBG_LABEL, we need to
check all passes which use isDebugValue() to check MachineInstr is debug
instruction or not. When expelling debug instructions, we should expel
both DBG_VALUE and DBG_LABEL. So, I create a new function,
isDebugInstr(), in MachineInstr to check whether the MachineInstr is
debug instruction or not.

This patch has no new test case. I have run regression test and there is
no difference in regression test.

Differential Revision: https://reviews.llvm.org/D45342

Patch by Hsiangkai Wang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@331844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Shiva Chen
2018-05-09 02:42:00 +00:00
parent 085342284c
commit 24abe71d71
106 changed files with 233 additions and 217 deletions
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lib/CodeGen/MachineBasicBlock.cpp
+5 -5
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@@ -174,7 +174,7 @@ MachineBasicBlock::SkipPHIsLabelsAndDebug(MachineBasicBlock::iterator I) {
const TargetInstrInfo *TII = getParent()->getSubtarget().getInstrInfo();
iterator E = end();
while (I != E && (I->isPHI() || I->isPosition() || I->isDebugValue() ||
while (I != E && (I->isPHI() || I->isPosition() || I->isDebugInstr() ||
TII->isBasicBlockPrologue(*I)))
++I;
// FIXME: This needs to change if we wish to bundle labels / dbg_values
@@ -187,7 +187,7 @@ MachineBasicBlock::SkipPHIsLabelsAndDebug(MachineBasicBlock::iterator I) {
MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
iterator B = begin(), E = end(), I = E;
while (I != B && ((--I)->isTerminator() || I->isDebugValue()))
while (I != B && ((--I)->isTerminator() || I->isDebugInstr()))
; /*noop */
while (I != E && !I->isTerminator())
++I;
@@ -196,7 +196,7 @@ MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
MachineBasicBlock::instr_iterator MachineBasicBlock::getFirstInstrTerminator() {
instr_iterator B = instr_begin(), E = instr_end(), I = E;
while (I != B && ((--I)->isTerminator() || I->isDebugValue()))
while (I != B && ((--I)->isTerminator() || I->isDebugInstr()))
; /*noop */
while (I != E && !I->isTerminator())
++I;
@@ -214,7 +214,7 @@ MachineBasicBlock::iterator MachineBasicBlock::getLastNonDebugInstr() {
while (I != B) {
--I;
// Return instruction that starts a bundle.
if (I->isDebugValue() || I->isInsideBundle())
if (I->isDebugInstr() || I->isInsideBundle())
continue;
return I;
}
@@ -1271,7 +1271,7 @@ DebugLoc MachineBasicBlock::findPrevDebugLoc(instr_iterator MBBI) {
if (MBBI == instr_begin()) return {};
// Skip debug declarations, we don't want a DebugLoc from them.
MBBI = skipDebugInstructionsBackward(std::prev(MBBI), instr_begin());
if (!MBBI->isDebugValue()) return MBBI->getDebugLoc();
if (!MBBI->isDebugInstr()) return MBBI->getDebugLoc();
return {};
}