[X86] Use MOVZX16rr8/MOVZXrm8 when extending input for i8 udivrem.

We can rely on X86FixupBWInsts to turn these into MOVZX32. This
simplifies a follow up commit to use MOVSX for i8 sdivrem with
a late optimization to use CBW when register allocation works out.

llvm-svn: 371242

diff --git a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
index eaedf14..1b870d5 100644 (file)
--- a/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/llvm/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -4732,17 +4732,17 @@ void X86DAGToDAGISel::Select(SDNode *Node) {
       MachineSDNode *Move;
       if (tryFoldLoad(Node, N0, Tmp0, Tmp1, Tmp2, Tmp3, Tmp4)) {
         SDValue Ops[] = { Tmp0, Tmp1, Tmp2, Tmp3, Tmp4, N0.getOperand(0) };
-        Move = CurDAG->getMachineNode(X86::MOVZX32rm8, dl, MVT::i32,
+        Move = CurDAG->getMachineNode(X86::MOVZX16rm8, dl, MVT::i32,
                                       MVT::Other, Ops);
         Chain = SDValue(Move, 1);
         ReplaceUses(N0.getValue(1), Chain);
         // Record the mem-refs
         CurDAG->setNodeMemRefs(Move, {cast<LoadSDNode>(N0)->getMemOperand()});
       } else {
-        Move = CurDAG->getMachineNode(X86::MOVZX32rr8, dl, MVT::i32, N0);
+        Move = CurDAG->getMachineNode(X86::MOVZX16rr8, dl, MVT::i32, N0);
         Chain = CurDAG->getEntryNode();
       }
-      Chain  = CurDAG->getCopyToReg(Chain, dl, X86::EAX, SDValue(Move, 0),
+      Chain  = CurDAG->getCopyToReg(Chain, dl, X86::AX, SDValue(Move, 0),
                                     SDValue());
       InFlag = Chain.getValue(1);
     } else {

diff --git a/llvm/test/CodeGen/X86/2008-09-11-CoalescerBug2.ll b/llvm/test/CodeGen/X86/2008-09-11-CoalescerBug2.ll
index cbccc90..2458852 100644 (file)
--- a/llvm/test/CodeGen/X86/2008-09-11-CoalescerBug2.ll
+++ b/llvm/test/CodeGen/X86/2008-09-11-CoalescerBug2.ll
@@ -22,7 +22,6 @@ define i32 @func_44(i16 signext %p_46) nounwind {
 ; SOURCE-SCHED-NEXT:    jne .LBB0_2
 ; SOURCE-SCHED-NEXT:  # %bb.1: # %bb11
 ; SOURCE-SCHED-NEXT:    movzbl %al, %eax
-; SOURCE-SCHED-NEXT:    # kill: def $eax killed $eax def $ax
 ; SOURCE-SCHED-NEXT:    divb %dl
 ; SOURCE-SCHED-NEXT:    movzbl %ah, %eax
 ; SOURCE-SCHED-NEXT:  .LBB0_2: # %bb12

diff --git a/llvm/test/CodeGen/X86/anyext.ll b/llvm/test/CodeGen/X86/anyext.ll
index 9320673..7833658 100644 (file)
--- a/llvm/test/CodeGen/X86/anyext.ll
+++ b/llvm/test/CodeGen/X86/anyext.ll
@@ -8,7 +8,6 @@ define i32 @foo(i32 %p, i8 zeroext %x) nounwind {
 ; X32-LABEL: foo:
 ; X32:       # %bb.0:
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movzbl %al, %eax
 ; X32-NEXT:    andl $1, %eax
@@ -17,7 +16,6 @@ define i32 @foo(i32 %p, i8 zeroext %x) nounwind {
 ; X64-LABEL: foo:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %al, %eax
 ; X64-NEXT:    andl $1, %eax

diff --git a/llvm/test/CodeGen/X86/bypass-slow-division-32.ll b/llvm/test/CodeGen/X86/bypass-slow-division-32.ll
index 66aacf1..988e4f9 100644 (file)
--- a/llvm/test/CodeGen/X86/bypass-slow-division-32.ll
+++ b/llvm/test/CodeGen/X86/bypass-slow-division-32.ll
@@ -17,7 +17,6 @@ define i32 @Test_get_quotient(i32 %a, i32 %b) nounwind {
 ; CHECK-NEXT:    retl
 ; CHECK-NEXT:  .LBB0_1:
 ; CHECK-NEXT:    movzbl %al, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movzbl %al, %eax
 ; CHECK-NEXT:    retl
@@ -41,7 +40,6 @@ define i32 @Test_get_remainder(i32 %a, i32 %b) nounwind {
 ; CHECK-NEXT:    retl
 ; CHECK-NEXT:  .LBB1_1:
 ; CHECK-NEXT:    movzbl %al, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movzbl %ah, %eax
 ; CHECK-NEXT:    retl
@@ -65,7 +63,6 @@ define i32 @Test_get_quotient_and_remainder(i32 %a, i32 %b) nounwind {
 ; CHECK-NEXT:    retl
 ; CHECK-NEXT:  .LBB2_1:
 ; CHECK-NEXT:    movzbl %al, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movzbl %ah, %edx
 ; CHECK-NEXT:    movzbl %al, %eax
@@ -103,14 +100,12 @@ define i32 @Test_use_div_and_idiv(i32 %a, i32 %b) nounwind {
 ; CHECK-NEXT:    jmp .LBB3_6
 ; CHECK-NEXT:  .LBB3_1:
 ; CHECK-NEXT:    movzbl %cl, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %bl
 ; CHECK-NEXT:    movzbl %al, %esi
 ; CHECK-NEXT:    testl $-256, %edi
 ; CHECK-NEXT:    jne .LBB3_5
 ; CHECK-NEXT:  .LBB3_4:
 ; CHECK-NEXT:    movzbl %cl, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %bl
 ; CHECK-NEXT:    movzbl %al, %eax
 ; CHECK-NEXT:  .LBB3_6:
@@ -208,7 +203,6 @@ define i32 @Test_use_div_imm_reg(i32 %a) nounwind {
 ; CHECK-NEXT:  .LBB8_1:
 ; CHECK-NEXT:    movb $4, %al
 ; CHECK-NEXT:    movzbl %al, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movzbl %al, %eax
 ; CHECK-NEXT:    retl
@@ -230,7 +224,6 @@ define i32 @Test_use_rem_imm_reg(i32 %a) nounwind {
 ; CHECK-NEXT:  .LBB9_1:
 ; CHECK-NEXT:    movb $4, %al
 ; CHECK-NEXT:    movzbl %al, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movzbl %al, %eax
 ; CHECK-NEXT:    retl

diff --git a/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll b/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
index a387d68..7bcb012 100644 (file)
--- a/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
+++ b/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
@@ -20,7 +20,6 @@ define i32 @div32(i32 %a, i32 %b) {
 ; ATOM-NEXT:    retq
 ; ATOM-NEXT:  .LBB0_1:
 ; ATOM-NEXT:    movzbl %dil, %eax
-; ATOM-NEXT:    # kill: def $eax killed $eax def $ax
 ; ATOM-NEXT:    divb %sil
 ; ATOM-NEXT:    movzbl %al, %eax
 ; ATOM-NEXT:    retq

diff --git a/llvm/test/CodeGen/X86/div-rem-pair-recomposition-unsigned.ll b/llvm/test/CodeGen/X86/div-rem-pair-recomposition-unsigned.ll
index 952a8d0..500c211 100644 (file)
--- a/llvm/test/CodeGen/X86/div-rem-pair-recomposition-unsigned.ll
+++ b/llvm/test/CodeGen/X86/div-rem-pair-recomposition-unsigned.ll
@@ -15,7 +15,6 @@ define i8 @scalar_i8(i8 %x, i8 %y, i8* %divdst) nounwind {
 ; X86-NEXT:    movb {{[0-9]+}}(%esp), %ch
 ; X86-NEXT:    movb {{[0-9]+}}(%esp), %cl
 ; X86-NEXT:    movzbl %cl, %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb %ch
 ; X86-NEXT:    movb %al, (%edx)
 ; X86-NEXT:    mulb %ch
@@ -183,82 +182,66 @@ define <16 x i8> @vector_i128_i8(<16 x i8> %x, <16 x i8> %y, <16 x i8>* %divdst)
 ; X86-NEXT:    movdqa %xmm0, (%esp)
 ; X86-NEXT:    movdqa %xmm1, {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm2
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm3
 ; X86-NEXT:    punpcklbw {{.*#+}} xmm3 = xmm3[0],xmm2[0],xmm3[1],xmm2[1],xmm3[2],xmm2[2],xmm3[3],xmm2[3],xmm3[4],xmm2[4],xmm3[5],xmm2[5],xmm3[6],xmm2[6],xmm3[7],xmm2[7]
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm4
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm2
 ; X86-NEXT:    punpcklbw {{.*#+}} xmm2 = xmm2[0],xmm4[0],xmm2[1],xmm4[1],xmm2[2],xmm4[2],xmm2[3],xmm4[3],xmm2[4],xmm4[4],xmm2[5],xmm4[5],xmm2[6],xmm4[6],xmm2[7],xmm4[7]
 ; X86-NEXT:    punpcklwd {{.*#+}} xmm2 = xmm2[0],xmm3[0],xmm2[1],xmm3[1],xmm2[2],xmm3[2],xmm2[3],xmm3[3]
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm3
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm4
 ; X86-NEXT:    punpcklbw {{.*#+}} xmm4 = xmm4[0],xmm3[0],xmm4[1],xmm3[1],xmm4[2],xmm3[2],xmm4[3],xmm3[3],xmm4[4],xmm3[4],xmm4[5],xmm3[5],xmm4[6],xmm3[6],xmm4[7],xmm3[7]
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm5
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm3
 ; X86-NEXT:    punpcklbw {{.*#+}} xmm3 = xmm3[0],xmm5[0],xmm3[1],xmm5[1],xmm3[2],xmm5[2],xmm3[3],xmm5[3],xmm3[4],xmm5[4],xmm3[5],xmm5[5],xmm3[6],xmm5[6],xmm3[7],xmm5[7]
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm5
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %eax
 ; X86-NEXT:    movd %eax, %xmm6
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %edx
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %esi
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %edi
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movzbl %al, %ebx
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    movl %eax, %ecx
 ; X86-NEXT:    movzbl (%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb {{[0-9]+}}(%esp)
 ; X86-NEXT:    punpcklwd {{.*#+}} xmm3 = xmm3[0],xmm4[0],xmm3[1],xmm4[1],xmm3[2],xmm4[2],xmm3[3],xmm4[3]
 ; X86-NEXT:    movd %edx, %xmm4
@@ -312,68 +295,52 @@ define <16 x i8> @vector_i128_i8(<16 x i8> %x, <16 x i8> %y, <16 x i8>* %divdst)
 ; X64-NEXT:    movdqa %xmm0, -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movdqa %xmm1, -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %eax
 ; X64-NEXT:    movd %eax, %xmm2
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r8d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r9d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r10d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r11d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r14d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r15d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r12d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %r13d
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %edi
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %esi
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %ebx
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %ebp
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movzbl %al, %edx
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movl %eax, %ecx
 ; X64-NEXT:    movzbl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb -{{[0-9]+}}(%rsp)
 ; X64-NEXT:    movd %r8d, %xmm3
 ; X64-NEXT:    movd %r9d, %xmm4

diff --git a/llvm/test/CodeGen/X86/divrem.ll b/llvm/test/CodeGen/X86/divrem.ll
index 0592dc9..222d0ba 100644 (file)
--- a/llvm/test/CodeGen/X86/divrem.ll
+++ b/llvm/test/CodeGen/X86/divrem.ll
@@ -263,7 +263,6 @@ define void @ui8(i8 %x, i8 %y, i8* %p, i8* %q) nounwind {
 ; X32:       # %bb.0:
 ; X32-NEXT:    pushl %ebx
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movl {{[0-9]+}}(%esp), %ecx
 ; X32-NEXT:    movl {{[0-9]+}}(%esp), %edx
@@ -276,7 +275,6 @@ define void @ui8(i8 %x, i8 %y, i8* %p, i8* %q) nounwind {
 ; X64-LABEL: ui8:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %esi
 ; X64-NEXT:    movb %al, (%rdx)

diff --git a/llvm/test/CodeGen/X86/divrem8_ext.ll b/llvm/test/CodeGen/X86/divrem8_ext.ll
index c141f91..3198e9c 100644 (file)
--- a/llvm/test/CodeGen/X86/divrem8_ext.ll
+++ b/llvm/test/CodeGen/X86/divrem8_ext.ll
@@ -6,7 +6,6 @@ define zeroext i8 @test_udivrem_zext_ah(i8 %x, i8 %y) {
 ; X32-LABEL: test_udivrem_zext_ah:
 ; X32:       # %bb.0:
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movzbl %ah, %ecx
 ; X32-NEXT:    movb %al, z
@@ -16,7 +15,6 @@ define zeroext i8 @test_udivrem_zext_ah(i8 %x, i8 %y) {
 ; X64-LABEL: test_udivrem_zext_ah:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %ecx
 ; X64-NEXT:    movb %al, {{.*}}(%rip)
@@ -32,7 +30,6 @@ define zeroext i8 @test_urem_zext_ah(i8 %x, i8 %y) {
 ; X32-LABEL: test_urem_zext_ah:
 ; X32:       # %bb.0:
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movzbl %ah, %eax
 ; X32-NEXT:    # kill: def $al killed $al killed $eax
@@ -41,7 +38,6 @@ define zeroext i8 @test_urem_zext_ah(i8 %x, i8 %y) {
 ; X64-LABEL: test_urem_zext_ah:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %eax
 ; X64-NEXT:    # kill: def $al killed $al killed $eax
@@ -55,7 +51,6 @@ define i8 @test_urem_noext_ah(i8 %x, i8 %y) {
 ; X32:       # %bb.0:
 ; X32-NEXT:    movb {{[0-9]+}}(%esp), %cl
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb %cl
 ; X32-NEXT:    movzbl %ah, %eax
 ; X32-NEXT:    addb %cl, %al
@@ -65,7 +60,6 @@ define i8 @test_urem_noext_ah(i8 %x, i8 %y) {
 ; X64-LABEL: test_urem_noext_ah:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %eax
 ; X64-NEXT:    addb %sil, %al
@@ -80,7 +74,6 @@ define i64 @test_urem_zext64_ah(i8 %x, i8 %y) {
 ; X32-LABEL: test_urem_zext64_ah:
 ; X32:       # %bb.0:
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movzbl %ah, %eax
 ; X32-NEXT:    xorl %edx, %edx
@@ -89,7 +82,6 @@ define i64 @test_urem_zext64_ah(i8 %x, i8 %y) {
 ; X64-LABEL: test_urem_zext64_ah:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %eax
 ; X64-NEXT:    retq
@@ -204,7 +196,6 @@ define i64 @pr25754(i8 %a, i8 %c) {
 ; X32-LABEL: pr25754:
 ; X32:       # %bb.0:
 ; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X32-NEXT:    # kill: def $eax killed $eax def $ax
 ; X32-NEXT:    divb {{[0-9]+}}(%esp)
 ; X32-NEXT:    movzbl %ah, %ecx
 ; X32-NEXT:    movzbl %al, %eax
@@ -215,7 +206,6 @@ define i64 @pr25754(i8 %a, i8 %c) {
 ; X64-LABEL: pr25754:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %ecx
 ; X64-NEXT:    movzbl %al, %eax

diff --git a/llvm/test/CodeGen/X86/scalar_widen_div.ll b/llvm/test/CodeGen/X86/scalar_widen_div.ll
index 17ca514..8808da9 100644 (file)
--- a/llvm/test/CodeGen/X86/scalar_widen_div.ll
+++ b/llvm/test/CodeGen/X86/scalar_widen_div.ll
@@ -81,15 +81,12 @@ define <3 x i8> @test_uchar_div(<3 x i8> %num, <3 x i8> %div) {
 ; CHECK-LABEL: test_uchar_div:
 ; CHECK:       # %bb.0:
 ; CHECK-NEXT:    movzbl %dil, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %cl
 ; CHECK-NEXT:    movl %eax, %edi
 ; CHECK-NEXT:    movzbl %sil, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %r8b
 ; CHECK-NEXT:    movl %eax, %esi
 ; CHECK-NEXT:    movzbl %dl, %eax
-; CHECK-NEXT:    # kill: def $eax killed $eax def $ax
 ; CHECK-NEXT:    divb %r9b
 ; CHECK-NEXT:    movl %eax, %ecx
 ; CHECK-NEXT:    movl %edi, %eax

diff --git a/llvm/test/CodeGen/X86/urem-power-of-two.ll b/llvm/test/CodeGen/X86/urem-power-of-two.ll
index c60305e..ba9b552 100644 (file)
--- a/llvm/test/CodeGen/X86/urem-power-of-two.ll
+++ b/llvm/test/CodeGen/X86/urem-power-of-two.ll
@@ -83,7 +83,6 @@ define i8 @and_pow_2(i8 %x, i8 %y) {
 ; X86-NEXT:    movb {{[0-9]+}}(%esp), %cl
 ; X86-NEXT:    andb $4, %cl
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    # kill: def $eax killed $eax def $ax
 ; X86-NEXT:    divb %cl
 ; X86-NEXT:    movzbl %ah, %eax
 ; X86-NEXT:    # kill: def $al killed $al killed $eax
@@ -93,7 +92,6 @@ define i8 @and_pow_2(i8 %x, i8 %y) {
 ; X64:       # %bb.0:
 ; X64-NEXT:    andb $4, %sil
 ; X64-NEXT:    movzbl %dil, %eax
-; X64-NEXT:    # kill: def $eax killed $eax def $ax
 ; X64-NEXT:    divb %sil
 ; X64-NEXT:    movzbl %ah, %eax
 ; X64-NEXT:    # kill: def $al killed $al killed $eax