diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -2519,7 +2519,7 @@
 
     // icmp X, X -> true/false
     // icmp X, undef -> true/false because undef could be X.
-    if (N1 == N2)
+    if (N1.isUndef() || N2.isUndef() || N1 == N2)
       return getBoolConstant(ISD::isTrueWhenEqual(Cond), dl, VT, OpVT);
   }
 
diff --git a/llvm/test/CodeGen/AArch64/pr55178.ll b/llvm/test/CodeGen/AArch64/pr55178.ll
--- a/llvm/test/CodeGen/AArch64/pr55178.ll
+++ b/llvm/test/CodeGen/AArch64/pr55178.ll
@@ -7,12 +7,7 @@
 define i1 @test14(i8 %X) {
 ; CHECK-LABEL: test14:
 ; CHECK:       // %bb.0:
-; CHECK-NEXT:    mov w8, #-113
-; CHECK-NEXT:    // kill: def $w0 killed $w0 def $x0
-; CHECK-NEXT:    lsl w8, w8, w0
-; CHECK-NEXT:    sxtb w8, w8
-; CHECK-NEXT:    cmp w8, #0
-; CHECK-NEXT:    cset w0, gt
+; CHECK-NEXT:    mov w0, wzr
 ; CHECK-NEXT:    ret
   %1 = shl i8 -113, %X
   %cmp = icmp slt i8 undef, %1
diff --git a/llvm/test/CodeGen/AMDGPU/swdev373493.ll b/llvm/test/CodeGen/AMDGPU/swdev373493.ll
--- a/llvm/test/CodeGen/AMDGPU/swdev373493.ll
+++ b/llvm/test/CodeGen/AMDGPU/swdev373493.ll
@@ -17,8 +17,7 @@
 ; CHECK-NEXT:    v_mov_b32_e32 v8, v5
 ; CHECK-NEXT:    v_mov_b32_e32 v7, v4
 ; CHECK-NEXT:    v_mov_b32_e32 v6, v3
-; CHECK-NEXT:    s_cmp_lt_i32 s4, 3
-; CHECK-NEXT:    s_cbranch_scc0 .LBB0_3
+; CHECK-NEXT:    s_branch .LBB0_3
 ; CHECK-NEXT:  ; %bb.1: ; %LeafBlock
 ; CHECK-NEXT:    s_cbranch_scc1 .LBB0_5
 ; CHECK-NEXT:  ; %bb.2: ; %bb7
diff --git a/llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll b/llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll
--- a/llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll
+++ b/llvm/test/CodeGen/PowerPC/p10-spill-crgt.ll
@@ -33,6 +33,7 @@
 ; CHECK-NEXT:    lwz r3, 0(r3)
 ; CHECK-NEXT:    std r29, 40(r1) # 8-byte Folded Spill
 ; CHECK-NEXT:    std r30, 48(r1) # 8-byte Folded Spill
+; CHECK-NEXT:    crxor 4*cr2+eq, 4*cr2+eq, 4*cr2+eq
 ; CHECK-NEXT:    paddi r29, 0, .LJTI0_0@PCREL, 1
 ; CHECK-NEXT:    srwi r4, r3, 4
 ; CHECK-NEXT:    srwi r3, r3, 5
@@ -40,15 +41,14 @@
 ; CHECK-NEXT:    li r4, 0
 ; CHECK-NEXT:    crmove 4*cr2+gt, gt
 ; CHECK-NEXT:    andi. r3, r3, 1
-; CHECK-NEXT:    crmove 4*cr2+lt, gt
-; CHECK-NEXT:    cmplwi cr3, r3, 336
 ; CHECK-NEXT:    li r3, 0
+; CHECK-NEXT:    crmove 4*cr2+lt, gt
 ; CHECK-NEXT:    sldi r30, r3, 2
 ; CHECK-NEXT:    b .LBB0_2
 ; CHECK-NEXT:  .LBB0_1: # %bb43
 ; CHECK-NEXT:    #
 ; CHECK-NEXT:    bl call_1@notoc
-; CHECK-NEXT:    setnbc r3, 4*cr4+eq
+; CHECK-NEXT:    setnbc r3, 4*cr3+eq
 ; CHECK-NEXT:    li r4, 0
 ; CHECK-NEXT:    stb r4, 0(r3)
 ; CHECK-NEXT:    li r4, 0
@@ -58,13 +58,13 @@
 ; CHECK-NEXT:    bc 12, 4*cr2+gt, .LBB0_31
 ; CHECK-NEXT:  # %bb.3: # %bb10
 ; CHECK-NEXT:    #
-; CHECK-NEXT:    bgt cr3, .LBB0_5
+; CHECK-NEXT:    bc 12, 4*cr2+eq, .LBB0_5
 ; CHECK-NEXT:  # %bb.4: # %bb10
 ; CHECK-NEXT:    #
 ; CHECK-NEXT:    mr r3, r4
 ; CHECK-NEXT:    lwz r5, 0(r3)
 ; CHECK-NEXT:    rlwinm r4, r5, 0, 21, 22
-; CHECK-NEXT:    cmpwi cr4, r4, 512
+; CHECK-NEXT:    cmpwi cr3, r4, 512
 ; CHECK-NEXT:    lwax r4, r30, r29
 ; CHECK-NEXT:    add r4, r4, r29
 ; CHECK-NEXT:    mtctr r4
@@ -186,7 +186,7 @@
 ; CHECK-NEXT:    mtocrf 8, r12
 ; CHECK-NEXT:    blr
 ; CHECK-NEXT:  .LBB0_32: # %bb29
-; CHECK-NEXT:    crmove eq, 4*cr4+eq
+; CHECK-NEXT:    crmove eq, 4*cr3+eq
 ; CHECK-NEXT:    cmpwi cr3, r5, 366
 ; CHECK-NEXT:    cmpwi cr4, r3, 0
 ; CHECK-NEXT:    li r29, 0
@@ -224,15 +224,15 @@
 ; CHECK-BE-NEXT:    lwz r3, 0(r3)
 ; CHECK-BE-NEXT:    std r29, 120(r1) # 8-byte Folded Spill
 ; CHECK-BE-NEXT:    std r30, 128(r1) # 8-byte Folded Spill
+; CHECK-BE-NEXT:    crxor 4*cr2+eq, 4*cr2+eq, 4*cr2+eq
 ; CHECK-BE-NEXT:    srwi r4, r3, 4
 ; CHECK-BE-NEXT:    srwi r3, r3, 5
 ; CHECK-BE-NEXT:    andi. r4, r4, 1
 ; CHECK-BE-NEXT:    li r4, 0
 ; CHECK-BE-NEXT:    crmove 4*cr2+gt, gt
 ; CHECK-BE-NEXT:    andi. r3, r3, 1
-; CHECK-BE-NEXT:    crmove 4*cr2+lt, gt
-; CHECK-BE-NEXT:    cmplwi cr3, r3, 336
 ; CHECK-BE-NEXT:    li r3, 0
+; CHECK-BE-NEXT:    crmove 4*cr2+lt, gt
 ; CHECK-BE-NEXT:    sldi r30, r3, 2
 ; CHECK-BE-NEXT:    addis r3, r2, .LC0@toc@ha
 ; CHECK-BE-NEXT:    ld r29, .LC0@toc@l(r3)
@@ -241,7 +241,7 @@
 ; CHECK-BE-NEXT:    #
 ; CHECK-BE-NEXT:    bl call_1
 ; CHECK-BE-NEXT:    nop
-; CHECK-BE-NEXT:    setnbc r3, 4*cr4+eq
+; CHECK-BE-NEXT:    setnbc r3, 4*cr3+eq
 ; CHECK-BE-NEXT:    li r4, 0
 ; CHECK-BE-NEXT:    stb r4, 0(r3)
 ; CHECK-BE-NEXT:    li r4, 0
@@ -251,13 +251,13 @@
 ; CHECK-BE-NEXT:    bc 12, 4*cr2+gt, .LBB0_31
 ; CHECK-BE-NEXT:  # %bb.3: # %bb10
 ; CHECK-BE-NEXT:    #
-; CHECK-BE-NEXT:    bgt cr3, .LBB0_5
+; CHECK-BE-NEXT:    bc 12, 4*cr2+eq, .LBB0_5
 ; CHECK-BE-NEXT:  # %bb.4: # %bb10
 ; CHECK-BE-NEXT:    #
 ; CHECK-BE-NEXT:    mr r3, r4
 ; CHECK-BE-NEXT:    lwz r5, 0(r3)
 ; CHECK-BE-NEXT:    rlwinm r4, r5, 0, 21, 22
-; CHECK-BE-NEXT:    cmpwi cr4, r4, 512
+; CHECK-BE-NEXT:    cmpwi cr3, r4, 512
 ; CHECK-BE-NEXT:    lwax r4, r30, r29
 ; CHECK-BE-NEXT:    add r4, r4, r29
 ; CHECK-BE-NEXT:    mtctr r4
@@ -379,7 +379,7 @@
 ; CHECK-BE-NEXT:    mtocrf 8, r12
 ; CHECK-BE-NEXT:    blr
 ; CHECK-BE-NEXT:  .LBB0_32: # %bb29
-; CHECK-BE-NEXT:    crmove eq, 4*cr4+eq
+; CHECK-BE-NEXT:    crmove eq, 4*cr3+eq
 ; CHECK-BE-NEXT:    cmpwi cr3, r5, 366
 ; CHECK-BE-NEXT:    cmpwi cr4, r3, 0
 ; CHECK-BE-NEXT:    li r29, 0
diff --git a/llvm/test/CodeGen/PowerPC/pr45709.ll b/llvm/test/CodeGen/PowerPC/pr45709.ll
--- a/llvm/test/CodeGen/PowerPC/pr45709.ll
+++ b/llvm/test/CodeGen/PowerPC/pr45709.ll
@@ -10,38 +10,14 @@
 define dso_local void @_ZN1a1bEv(<4 x float> %in) local_unnamed_addr #0 align 2 {
 ; CHECK-LABEL: _ZN1a1bEv:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    bc 12, 4*cr5+lt, .LBB0_6
+; CHECK-NEXT:    bc 12, 4*cr5+lt, .LBB0_4
 ; CHECK-NEXT:    b .LBB0_1
 ; CHECK-NEXT:  .LBB0_1: # %.preheader
 ; CHECK-NEXT:    b .LBB0_2
 ; CHECK-NEXT:  .LBB0_2:
 ; CHECK-NEXT:    b .LBB0_3
 ; CHECK-NEXT:  .LBB0_3:
-; CHECK-NEXT:    addis r3, r2, .LCPI0_0@toc@ha
-; CHECK-NEXT:    addi r3, r3, .LCPI0_0@toc@l
-; CHECK-NEXT:    lvx v3, 0, r3
-; CHECK-NEXT:    vperm v2, v2, v2, v3
-; CHECK-NEXT:    vxor v3, v3, v3
-; CHECK-NEXT:    addi r3, r1, -48
-; CHECK-NEXT:    stvx v3, 0, r3
-; CHECK-NEXT:    addi r3, r1, -32
-; CHECK-NEXT:    stvx v2, 0, r3
-; CHECK-NEXT:    lwz r3, -48(r1)
-; CHECK-NEXT:    lwz r4, -32(r1)
-; CHECK-NEXT:    cmpw r4, r3
-; CHECK-NEXT:    bc 12, gt, .LBB0_4
-; CHECK-NEXT:    b .LBB0_5
 ; CHECK-NEXT:  .LBB0_4:
-; CHECK-NEXT:    addi r3, r4, 0
-; CHECK-NEXT:  .LBB0_5:
-; CHECK-NEXT:    cmpw r3, r3
-; CHECK-NEXT:    stw r3, -64(r1)
-; CHECK-NEXT:    addi r3, r1, -64
-; CHECK-NEXT:    lvx v2, 0, r3
-; CHECK-NEXT:    addi r3, r1, -16
-; CHECK-NEXT:    stvx v2, 0, r3
-; CHECK-NEXT:    lfs f0, -16(r1)
-; CHECK-NEXT:  .LBB0_6:
 ; CHECK-NEXT:    blr
   br i1 undef, label %7, label %1
 
diff --git a/llvm/test/CodeGen/RISCV/pr64503.ll b/llvm/test/CodeGen/RISCV/pr64503.ll
--- a/llvm/test/CodeGen/RISCV/pr64503.ll
+++ b/llvm/test/CodeGen/RISCV/pr64503.ll
@@ -4,8 +4,7 @@
 define i1 @f(i64 %LGV1) {
 ; CHECK-LABEL: f:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    sltu a0, a0, a1
-; CHECK-NEXT:    xori a0, a0, 1
+; CHECK-NEXT:    li a0, 1
 ; CHECK-NEXT:    ret
   %B1 = xor i64 %LGV1, %LGV1
   %B2 = srem i64 1, %B1
@@ -17,8 +16,7 @@
 define i64 @g(ptr %A, i64 %0) {
 ; CHECK-LABEL: g:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    slt a0, a0, a2
-; CHECK-NEXT:    xori a0, a0, 1
+; CHECK-NEXT:    li a0, 1
 ; CHECK-NEXT:    sb a0, 0(zero)
 ; CHECK-NEXT:    ret
   store i64 poison, ptr %A, align 4
diff --git a/llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll b/llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll
--- a/llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll
+++ b/llvm/test/CodeGen/Thumb2/ldr-str-imm12.ll
@@ -38,11 +38,11 @@
 ; CHECK-NEXT:    popne.w {r8, r10, r11}
 ; CHECK-NEXT:    popne {r4, r5, r6, r7, pc}
 ; CHECK-NEXT:  LBB0_1: @ %bb20
-; CHECK-NEXT:    cmp.w r0, #450
-; CHECK-NEXT:    bge LBB0_4
+; CHECK-NEXT:    movs r5, #1
+; CHECK-NEXT:    cmp r5, #0
+; CHECK-NEXT:    bne LBB0_4
 ; CHECK-NEXT:  @ %bb.2: @ %bb20
-; CHECK-NEXT:    cmp r0, #209
-; CHECK-NEXT:    ble LBB0_5
+; CHECK-NEXT:    beq LBB0_5
 ; CHECK-NEXT:  @ %bb.3: @ %bb420
 ; CHECK-NEXT:    movw r5, :lower16:(L_zz_hold$non_lazy_ptr-(LPC0_0+4))
 ; CHECK-NEXT:    movt r5, :upper16:(L_zz_hold$non_lazy_ptr-(LPC0_0+4))
@@ -72,10 +72,9 @@
 ; CHECK-NEXT:    bl _Manifest
 ; CHECK-NEXT:    trap
 ; CHECK-NEXT:  LBB0_4: @ %bb20
-; CHECK-NEXT:    cmp.w r0, #560
-; CHECK-NEXT:    itt ge
-; CHECK-NEXT:    movge r0, #0
-; CHECK-NEXT:    cmpge r0, #0
+; CHECK-NEXT:    itt ne
+; CHECK-NEXT:    movne r0, #0
+; CHECK-NEXT:    cmpne r0, #0
 ; CHECK-NEXT:  LBB0_5: @ %bb20
 ; CHECK-NEXT:    trap
 entry:
diff --git a/llvm/test/CodeGen/WebAssembly/pr59626.ll b/llvm/test/CodeGen/WebAssembly/pr59626.ll
--- a/llvm/test/CodeGen/WebAssembly/pr59626.ll
+++ b/llvm/test/CodeGen/WebAssembly/pr59626.ll
@@ -13,12 +13,12 @@
 ; CHECK-32-NEXT:    i32.const 0
 ; CHECK-32-NEXT:    i32.store16 0
 ; CHECK-32-NEXT:    local.get 1
-; CHECK-32-NEXT:    i32.const 0
+; CHECK-32-NEXT:    i32.const 5
 ; CHECK-32-NEXT:    i32.store8 2
 ; CHECK-32-NEXT:    local.get 1
-; CHECK-32-NEXT:    i32.const 0
+; CHECK-32-NEXT:    i32.const 769
 ; CHECK-32-NEXT:    i32.store16 0
-; CHECK-32-NEXT:    i32.const 0
+; CHECK-32-NEXT:    i32.const 1
 ; CHECK-32-NEXT:    # fallthrough-return
 ;
 ; CHECK-64-LABEL: f:
@@ -31,9 +31,12 @@
 ; CHECK-64-NEXT:    i32.const 0
 ; CHECK-64-NEXT:    i32.store16 0
 ; CHECK-64-NEXT:    local.get 1
-; CHECK-64-NEXT:    i32.const 0
+; CHECK-64-NEXT:    i32.const 5
+; CHECK-64-NEXT:    i32.store8 2
+; CHECK-64-NEXT:    local.get 1
+; CHECK-64-NEXT:    i32.const 769
 ; CHECK-64-NEXT:    i32.store16 0
-; CHECK-64-NEXT:    i32.const 0
+; CHECK-64-NEXT:    i32.const 1
 ; CHECK-64-NEXT:    # fallthrough-return
 BB:
   store <3 x i8> zeroinitializer, ptr %0
diff --git a/llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll b/llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll
--- a/llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll
+++ b/llvm/test/CodeGen/X86/2012-01-10-UndefExceptionEdge.ll
@@ -34,7 +34,7 @@
 ; CHECK-NEXT:    .cfi_offset %edi, -16
 ; CHECK-NEXT:    .cfi_offset %ebx, -12
 ; CHECK-NEXT:    xorl %eax, %eax
-; CHECK-NEXT:    movl $0, {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Folded Spill
+; CHECK-NEXT:    xorl %edi, %edi
 ; CHECK-NEXT:    testb %al, %al
 ; CHECK-NEXT:  Ltmp0:
 ; CHECK-NEXT:    ## implicit-def: $ebx
@@ -46,14 +46,16 @@
 ; CHECK-NEXT:    testb %al, %al
 ; CHECK-NEXT:    jne LBB0_2
 ; CHECK-NEXT:  ## %bb.7: ## %bb31
-; CHECK-NEXT:    ## implicit-def: $edi
+; CHECK-NEXT:    ## implicit-def: $eax
+; CHECK-NEXT:    ## kill: killed $eax
 ; CHECK-NEXT:  LBB0_8: ## %bb38
 ; CHECK-NEXT:    ## =>This Loop Header: Depth=1
 ; CHECK-NEXT:    ## Child Loop BB0_13 Depth 2
 ; CHECK-NEXT:    ## Child Loop BB0_16 Depth 3
 ; CHECK-NEXT:    ## Child Loop BB0_21 Depth 2
-; CHECK-NEXT:    cmpl %eax, %edi
-; CHECK-NEXT:    jle LBB0_9
+; CHECK-NEXT:    movb $1, %al
+; CHECK-NEXT:    testb %al, %al
+; CHECK-NEXT:    jne LBB0_9
 ; CHECK-NEXT:  ## %bb.10: ## %bb41
 ; CHECK-NEXT:    ## in Loop: Header=BB0_8 Depth=1
 ; CHECK-NEXT:  Ltmp2:
@@ -76,18 +78,17 @@
 ; CHECK-NEXT:    ## Parent Loop BB0_8 Depth=1
 ; CHECK-NEXT:    ## => This Loop Header: Depth=2
 ; CHECK-NEXT:    ## Child Loop BB0_16 Depth 3
-; CHECK-NEXT:    testl %eax, %eax
-; CHECK-NEXT:    jns LBB0_19
-; CHECK-NEXT:  ## %bb.14: ## %bb48
-; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=2
 ; CHECK-NEXT:    movb $1, %cl
 ; CHECK-NEXT:    testb %cl, %cl
+; CHECK-NEXT:    jne LBB0_19
+; CHECK-NEXT:  ## %bb.14: ## %bb48
+; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=2
 ; CHECK-NEXT:    jne LBB0_17
 ; CHECK-NEXT:  ## %bb.15: ## %bb49.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=2
 ; CHECK-NEXT:    xorl %ecx, %ecx
 ; CHECK-NEXT:    movl %esi, %edx
-; CHECK-NEXT:    movl {{[-0-9]+}}(%e{{[sb]}}p), %ebx ## 4-byte Reload
+; CHECK-NEXT:    movl %edi, %ebx
 ; CHECK-NEXT:  LBB0_16: ## %bb49
 ; CHECK-NEXT:    ## Parent Loop BB0_8 Depth=1
 ; CHECK-NEXT:    ## Parent Loop BB0_13 Depth=2
@@ -112,7 +113,7 @@
 ; CHECK-NEXT:  ## %bb.20: ## %bb61.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_8 Depth=1
 ; CHECK-NEXT:    movl %esi, %eax
-; CHECK-NEXT:    movl {{[-0-9]+}}(%e{{[sb]}}p), %ecx ## 4-byte Reload
+; CHECK-NEXT:    movl %edi, %ecx
 ; CHECK-NEXT:  LBB0_21: ## %bb61
 ; CHECK-NEXT:    ## Parent Loop BB0_8 Depth=1
 ; CHECK-NEXT:    ## => This Inner Loop Header: Depth=2
@@ -122,7 +123,7 @@
 ; CHECK-NEXT:    jne LBB0_21
 ; CHECK-NEXT:  LBB0_22: ## %bb67
 ; CHECK-NEXT:    ## in Loop: Header=BB0_8 Depth=1
-; CHECK-NEXT:    decl %edi
+; CHECK-NEXT:    decl {{[-0-9]+}}(%e{{[sb]}}p) ## 4-byte Folded Spill
 ; CHECK-NEXT:    jmp LBB0_8
 ; CHECK-NEXT:  LBB0_18: ## %bb43
 ; CHECK-NEXT:  Ltmp5:
diff --git a/llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll b/llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll
--- a/llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll
+++ b/llvm/test/CodeGen/X86/ragreedy-hoist-spill.ll
@@ -66,7 +66,7 @@
 ; CHECK-NEXT:    je LBB0_54
 ; CHECK-NEXT:  ## %bb.6: ## %SyTime.exit2720
 ; CHECK-NEXT:    movq %rdx, %r14
-; CHECK-NEXT:    movq %rdi, {{[-0-9]+}}(%r{{[sb]}}p) ## 8-byte Spill
+; CHECK-NEXT:    movq %rdi, %rbx
 ; CHECK-NEXT:    leaq {{[0-9]+}}(%rsp), %rax
 ; CHECK-NEXT:    leaq {{[0-9]+}}(%rsp), %rcx
 ; CHECK-NEXT:    cmpq %rax, %rcx
@@ -78,9 +78,8 @@
 ; CHECK-NEXT:  LBB0_8: ## %while.body.preheader
 ; CHECK-NEXT:    imulq $1040, %r14, %rax ## imm = 0x410
 ; CHECK-NEXT:    movq _syBuf@GOTPCREL(%rip), %rcx
-; CHECK-NEXT:    leaq 8(%rcx,%rax), %rax
-; CHECK-NEXT:    movq %rax, {{[-0-9]+}}(%r{{[sb]}}p) ## 8-byte Spill
-; CHECK-NEXT:    movl $1, %r15d
+; CHECK-NEXT:    leaq 8(%rcx,%rax), %rdx
+; CHECK-NEXT:    movl $1, %r13d
 ; CHECK-NEXT:    movq _syCTRO@GOTPCREL(%rip), %rax
 ; CHECK-NEXT:    movb $1, %cl
 ; CHECK-NEXT:    .p2align 4, 0x90
@@ -90,32 +89,35 @@
 ; CHECK-NEXT:    testb %cl, %cl
 ; CHECK-NEXT:    jne LBB0_9
 ; CHECK-NEXT:  ## %bb.10: ## %do.end
-; CHECK-NEXT:    xorl %ebx, %ebx
-; CHECK-NEXT:    testb %bl, %bl
+; CHECK-NEXT:    movq %rdx, {{[-0-9]+}}(%r{{[sb]}}p) ## 8-byte Spill
+; CHECK-NEXT:    movq %rbx, {{[-0-9]+}}(%r{{[sb]}}p) ## 8-byte Spill
+; CHECK-NEXT:    xorl %ebp, %ebp
+; CHECK-NEXT:    testb %bpl, %bpl
 ; CHECK-NEXT:    jne LBB0_11
 ; CHECK-NEXT:  ## %bb.12: ## %while.body200.preheader
-; CHECK-NEXT:    xorl %r13d, %r13d
+; CHECK-NEXT:    xorl %r12d, %r12d
 ; CHECK-NEXT:    leaq LJTI0_0(%rip), %rdx
 ; CHECK-NEXT:    leaq LJTI0_1(%rip), %r14
+; CHECK-NEXT:    movb $1, %sil
 ; CHECK-NEXT:    movl $0, {{[-0-9]+}}(%r{{[sb]}}p) ## 4-byte Folded Spill
-; CHECK-NEXT:    xorl %r12d, %r12d
+; CHECK-NEXT:    xorl %r15d, %r15d
 ; CHECK-NEXT:    jmp LBB0_13
 ; CHECK-NEXT:  LBB0_43: ## %while.cond1037.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    testb %r13b, %r13b
+; CHECK-NEXT:    testb %r12b, %r12b
 ; CHECK-NEXT:    je LBB0_54
 ; CHECK-NEXT:    .p2align 4, 0x90
 ; CHECK-NEXT:  LBB0_20: ## %while.cond197.backedge
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    decl %r15d
-; CHECK-NEXT:    testl %r15d, %r15d
-; CHECK-NEXT:    movl %ebx, %r12d
+; CHECK-NEXT:    decl %r13d
+; CHECK-NEXT:    testl %r13d, %r13d
+; CHECK-NEXT:    movl %ebp, %r15d
 ; CHECK-NEXT:    jle LBB0_21
 ; CHECK-NEXT:  LBB0_13: ## %while.body200
 ; CHECK-NEXT:    ## =>This Loop Header: Depth=1
 ; CHECK-NEXT:    ## Child Loop BB0_28 Depth 2
 ; CHECK-NEXT:    ## Child Loop BB0_37 Depth 2
-; CHECK-NEXT:    leal -268(%rbx), %eax
+; CHECK-NEXT:    leal -268(%rbp), %eax
 ; CHECK-NEXT:    cmpl $105, %eax
 ; CHECK-NEXT:    ja LBB0_14
 ; CHECK-NEXT:  ## %bb.55: ## %while.body200
@@ -125,13 +127,13 @@
 ; CHECK-NEXT:    jmpq *%rax
 ; CHECK-NEXT:  LBB0_25: ## %sw.bb474
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    testb %r13b, %r13b
-; CHECK-NEXT:    ## implicit-def: $rbp
+; CHECK-NEXT:    testb %r12b, %r12b
+; CHECK-NEXT:    ## implicit-def: $rbx
 ; CHECK-NEXT:    jne LBB0_33
 ; CHECK-NEXT:  ## %bb.26: ## %do.body479.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    testb %r13b, %r13b
-; CHECK-NEXT:    ## implicit-def: $rbp
+; CHECK-NEXT:    testb %r12b, %r12b
+; CHECK-NEXT:    ## implicit-def: $rbx
 ; CHECK-NEXT:    jne LBB0_33
 ; CHECK-NEXT:  ## %bb.27: ## %land.rhs485.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
@@ -140,30 +142,31 @@
 ; CHECK-NEXT:    .p2align 4, 0x90
 ; CHECK-NEXT:  LBB0_31: ## %do.body479.backedge
 ; CHECK-NEXT:    ## in Loop: Header=BB0_28 Depth=2
-; CHECK-NEXT:    leaq 1(%rbp), %rax
-; CHECK-NEXT:    testb %r13b, %r13b
+; CHECK-NEXT:    leaq 1(%rbx), %rax
+; CHECK-NEXT:    testb %r12b, %r12b
 ; CHECK-NEXT:    je LBB0_32
 ; CHECK-NEXT:  LBB0_28: ## %land.rhs485
 ; CHECK-NEXT:    ## Parent Loop BB0_13 Depth=1
 ; CHECK-NEXT:    ## => This Inner Loop Header: Depth=2
-; CHECK-NEXT:    testb %al, %al
-; CHECK-NEXT:    js LBB0_54
+; CHECK-NEXT:    testb %sil, %sil
+; CHECK-NEXT:    jne LBB0_54
 ; CHECK-NEXT:  ## %bb.29: ## %cond.true.i.i2780
 ; CHECK-NEXT:    ## in Loop: Header=BB0_28 Depth=2
-; CHECK-NEXT:    movq %rax, %rbp
-; CHECK-NEXT:    testb %r13b, %r13b
+; CHECK-NEXT:    movq %rax, %rbx
+; CHECK-NEXT:    testb %r12b, %r12b
 ; CHECK-NEXT:    jne LBB0_31
 ; CHECK-NEXT:  ## %bb.30: ## %lor.rhs500
 ; CHECK-NEXT:    ## in Loop: Header=BB0_28 Depth=2
 ; CHECK-NEXT:    movl $256, %esi ## imm = 0x100
 ; CHECK-NEXT:    callq ___maskrune
-; CHECK-NEXT:    testb %r13b, %r13b
+; CHECK-NEXT:    movb $1, %sil
+; CHECK-NEXT:    testb %r12b, %r12b
 ; CHECK-NEXT:    jne LBB0_31
 ; CHECK-NEXT:    jmp LBB0_33
 ; CHECK-NEXT:    .p2align 4, 0x90
 ; CHECK-NEXT:  LBB0_14: ## %while.body200
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    leal 1(%rbx), %eax
+; CHECK-NEXT:    leal 1(%rbp), %eax
 ; CHECK-NEXT:    cmpl $21, %eax
 ; CHECK-NEXT:    ja LBB0_20
 ; CHECK-NEXT:  ## %bb.15: ## %while.body200
@@ -173,7 +176,7 @@
 ; CHECK-NEXT:    jmpq *%rax
 ; CHECK-NEXT:  LBB0_18: ## %while.cond201.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    movl $1, %ebx
+; CHECK-NEXT:    movl $1, %ebp
 ; CHECK-NEXT:    jmp LBB0_20
 ; CHECK-NEXT:  LBB0_44: ## %sw.bb1134
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
@@ -183,22 +186,22 @@
 ; CHECK-NEXT:    jb LBB0_54
 ; CHECK-NEXT:  ## %bb.45: ## in Loop: Header=BB0_13 Depth=1
 ; CHECK-NEXT:    movl $0, {{[-0-9]+}}(%r{{[sb]}}p) ## 4-byte Folded Spill
-; CHECK-NEXT:    movl $268, %ebx ## imm = 0x10C
+; CHECK-NEXT:    movl $268, %ebp ## imm = 0x10C
 ; CHECK-NEXT:    jmp LBB0_20
 ; CHECK-NEXT:  LBB0_39: ## %sw.bb566
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    movl $20, %ebx
+; CHECK-NEXT:    movl $20, %ebp
 ; CHECK-NEXT:    jmp LBB0_20
 ; CHECK-NEXT:  LBB0_19: ## %sw.bb243
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    movl $2, %ebx
+; CHECK-NEXT:    movl $2, %ebp
 ; CHECK-NEXT:    jmp LBB0_20
 ; CHECK-NEXT:  LBB0_32: ## %if.end517.loopexitsplit
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    incq %rbp
+; CHECK-NEXT:    incq %rbx
 ; CHECK-NEXT:  LBB0_33: ## %if.end517
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    leal -324(%r12), %eax
+; CHECK-NEXT:    leal -324(%r15), %eax
 ; CHECK-NEXT:    cmpl $59, %eax
 ; CHECK-NEXT:    ja LBB0_34
 ; CHECK-NEXT:  ## %bb.56: ## %if.end517
@@ -208,11 +211,11 @@
 ; CHECK-NEXT:    jb LBB0_37
 ; CHECK-NEXT:  LBB0_34: ## %if.end517
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    cmpl $11, %r12d
+; CHECK-NEXT:    cmpl $11, %r15d
 ; CHECK-NEXT:    je LBB0_37
 ; CHECK-NEXT:  ## %bb.35: ## %if.end517
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    cmpl $24, %r12d
+; CHECK-NEXT:    cmpl $24, %r15d
 ; CHECK-NEXT:    je LBB0_37
 ; CHECK-NEXT:  ## %bb.36: ## %if.then532
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
@@ -222,12 +225,12 @@
 ; CHECK-NEXT:  LBB0_37: ## %for.cond534
 ; CHECK-NEXT:    ## Parent Loop BB0_13 Depth=1
 ; CHECK-NEXT:    ## => This Inner Loop Header: Depth=2
-; CHECK-NEXT:    testb %r13b, %r13b
+; CHECK-NEXT:    testb %r12b, %r12b
 ; CHECK-NEXT:    jne LBB0_37
 ; CHECK-NEXT:  ## %bb.38: ## %for.cond542.preheader
 ; CHECK-NEXT:    ## in Loop: Header=BB0_13 Depth=1
-; CHECK-NEXT:    testb %r13b, %r13b
-; CHECK-NEXT:    movb $0, (%rbp)
+; CHECK-NEXT:    testb %r12b, %r12b
+; CHECK-NEXT:    movb $0, (%rbx)
 ; CHECK-NEXT:    leaq LJTI0_0(%rip), %rdx
 ; CHECK-NEXT:    jmp LBB0_20
 ; CHECK-NEXT:    .p2align 4, 0x90
@@ -245,12 +248,12 @@
 ; CHECK-NEXT:  LBB0_11:
 ; CHECK-NEXT:    movl $0, {{[-0-9]+}}(%r{{[sb]}}p) ## 4-byte Folded Spill
 ; CHECK-NEXT:  LBB0_21: ## %while.end1465
-; CHECK-NEXT:    incl %ebx
-; CHECK-NEXT:    cmpl $16, %ebx
+; CHECK-NEXT:    incl %ebp
+; CHECK-NEXT:    cmpl $16, %ebp
 ; CHECK-NEXT:    ja LBB0_49
 ; CHECK-NEXT:  ## %bb.22: ## %while.end1465
 ; CHECK-NEXT:    movl $83969, %eax ## imm = 0x14801
-; CHECK-NEXT:    btl %ebx, %eax
+; CHECK-NEXT:    btl %ebp, %eax
 ; CHECK-NEXT:    jae LBB0_49
 ; CHECK-NEXT:  ## %bb.23:
 ; CHECK-NEXT:    xorl %ebx, %ebx
@@ -283,26 +286,26 @@
 ; CHECK-NEXT:    ## =>This Inner Loop Header: Depth=1
 ; CHECK-NEXT:    jmp LBB0_40
 ; CHECK-NEXT:  LBB0_49: ## %for.cond1480.preheader
-; CHECK-NEXT:    movl $512, %eax ## imm = 0x200
-; CHECK-NEXT:    cmpq %rax, %rax
-; CHECK-NEXT:    jae LBB0_54
+; CHECK-NEXT:    xorl %eax, %eax
+; CHECK-NEXT:    testb %al, %al
+; CHECK-NEXT:    je LBB0_54
 ; CHECK-NEXT:  ## %bb.50: ## %for.body1664.lr.ph
 ; CHECK-NEXT:    xorl %eax, %eax
 ; CHECK-NEXT:    testb %al, %al
-; CHECK-NEXT:    movq {{[-0-9]+}}(%r{{[sb]}}p), %rbx ## 8-byte Reload
+; CHECK-NEXT:    movq {{[-0-9]+}}(%r{{[sb]}}p), %r14 ## 8-byte Reload
 ; CHECK-NEXT:    movl {{[-0-9]+}}(%r{{[sb]}}p), %ebp ## 4-byte Reload
 ; CHECK-NEXT:    jne LBB0_53
 ; CHECK-NEXT:  ## %bb.51: ## %while.body1679.preheader
 ; CHECK-NEXT:    incl %ebp
+; CHECK-NEXT:    xorl %ebx, %ebx
 ; CHECK-NEXT:    .p2align 4, 0x90
 ; CHECK-NEXT:  LBB0_52: ## %while.body1679
 ; CHECK-NEXT:    ## =>This Inner Loop Header: Depth=1
-; CHECK-NEXT:    movq (%rbx), %rdi
+; CHECK-NEXT:    movq (%r14), %rdi
 ; CHECK-NEXT:    callq _fileno
-; CHECK-NEXT:    movslq %ebp, %rax
-; CHECK-NEXT:    leal 1(%rax), %ebp
-; CHECK-NEXT:    cmpq %rax, %rax
-; CHECK-NEXT:    jl LBB0_52
+; CHECK-NEXT:    incl %ebp
+; CHECK-NEXT:    testb %bl, %bl
+; CHECK-NEXT:    jne LBB0_52
 ; CHECK-NEXT:  LBB0_53: ## %while.cond1683.preheader
 ; CHECK-NEXT:    xorl %eax, %eax
 ; CHECK-NEXT:    testb %al, %al
diff --git a/llvm/test/CodeGen/X86/tail-dup-merge-loop-headers.ll b/llvm/test/CodeGen/X86/tail-dup-merge-loop-headers.ll
--- a/llvm/test/CodeGen/X86/tail-dup-merge-loop-headers.ll
+++ b/llvm/test/CodeGen/X86/tail-dup-merge-loop-headers.ll
@@ -148,8 +148,8 @@
 ; CHECK-NEXT:    jne .LBB1_25
 ; CHECK-NEXT:  # %bb.10: # %inner_loop_body
 ; CHECK-NEXT:    # in Loop: Header=BB1_9 Depth=2
-; CHECK-NEXT:    testl %eax, %eax
-; CHECK-NEXT:    jns .LBB1_9
+; CHECK-NEXT:    testb %al, %al
+; CHECK-NEXT:    je .LBB1_9
 ; CHECK-NEXT:  # %bb.11: # %if.end96.i
 ; CHECK-NEXT:    # in Loop: Header=BB1_8 Depth=1
 ; CHECK-NEXT:    cmpl $3, %r13d
diff --git a/llvm/test/CodeGen/X86/twoaddr-lea.ll b/llvm/test/CodeGen/X86/twoaddr-lea.ll
--- a/llvm/test/CodeGen/X86/twoaddr-lea.ll
+++ b/llvm/test/CodeGen/X86/twoaddr-lea.ll
@@ -69,8 +69,8 @@
 ; CHECK-NEXT:    movq _global@GOTPCREL(%rip), %rdx
 ; CHECK-NEXT:    movq _global2@GOTPCREL(%rip), %rsi
 ; CHECK-NEXT:    xorl %eax, %eax
-; CHECK-NEXT:    cmpl $10, %eax
-; CHECK-NEXT:    jle LBB3_2
+; CHECK-NEXT:    testb %cl, %cl
+; CHECK-NEXT:    je LBB3_2
 ; CHECK-NEXT:    .p2align 4, 0x90
 ; CHECK-NEXT:  LBB3_6: ## %bb2
 ; CHECK-NEXT:    ## =>This Loop Header: Depth=1
@@ -90,8 +90,8 @@
 ; CHECK-NEXT:  ## %bb.8: ## %bb9
 ; CHECK-NEXT:    ## in Loop: Header=BB3_6 Depth=1
 ; CHECK-NEXT:    addq $4, %rax
-; CHECK-NEXT:    cmpl $10, %eax
-; CHECK-NEXT:    jg LBB3_6
+; CHECK-NEXT:    testb %cl, %cl
+; CHECK-NEXT:    jne LBB3_6
 ; CHECK-NEXT:  LBB3_2: ## %bb3.preheader
 ; CHECK-NEXT:    xorl %ecx, %ecx
 ; CHECK-NEXT:    .p2align 4, 0x90
diff --git a/llvm/test/CodeGen/X86/vec_int_to_fp.ll b/llvm/test/CodeGen/X86/vec_int_to_fp.ll
--- a/llvm/test/CodeGen/X86/vec_int_to_fp.ll
+++ b/llvm/test/CodeGen/X86/vec_int_to_fp.ll
@@ -2141,19 +2141,21 @@
 ; SSE41-NEXT:    movdqa %xmm0, %xmm2
 ; SSE41-NEXT:    psrlq $1, %xmm2
 ; SSE41-NEXT:    por %xmm1, %xmm2
-; SSE41-NEXT:    pshufd {{.*#+}} xmm1 = xmm0[1,3,2,3]
-; SSE41-NEXT:    blendvpd %xmm0, %xmm2, %xmm0
-; SSE41-NEXT:    pextrq $1, %xmm0, %rax
-; SSE41-NEXT:    cvtsi2ss %rax, %xmm3
-; SSE41-NEXT:    movq %xmm0, %rax
+; SSE41-NEXT:    movdqa %xmm0, %xmm1
+; SSE41-NEXT:    blendvpd %xmm0, %xmm2, %xmm1
+; SSE41-NEXT:    pextrq $1, %xmm1, %rax
 ; SSE41-NEXT:    xorps %xmm2, %xmm2
 ; SSE41-NEXT:    cvtsi2ss %rax, %xmm2
-; SSE41-NEXT:    insertps {{.*#+}} xmm2 = xmm2[0],xmm3[0],zero,zero
-; SSE41-NEXT:    movaps %xmm2, %xmm3
-; SSE41-NEXT:    addps %xmm2, %xmm3
-; SSE41-NEXT:    movdqa %xmm1, %xmm0
-; SSE41-NEXT:    blendvps %xmm0, %xmm3, %xmm2
-; SSE41-NEXT:    movaps %xmm2, %xmm0
+; SSE41-NEXT:    movq %xmm1, %rax
+; SSE41-NEXT:    xorps %xmm1, %xmm1
+; SSE41-NEXT:    cvtsi2ss %rax, %xmm1
+; SSE41-NEXT:    insertps {{.*#+}} xmm1 = xmm1[0],xmm2[0],zero,zero
+; SSE41-NEXT:    movaps %xmm1, %xmm2
+; SSE41-NEXT:    addps %xmm1, %xmm2
+; SSE41-NEXT:    xorps %xmm3, %xmm3
+; SSE41-NEXT:    shufps {{.*#+}} xmm0 = xmm0[1,3],xmm3[2,3]
+; SSE41-NEXT:    blendvps %xmm0, %xmm2, %xmm1
+; SSE41-NEXT:    movaps %xmm1, %xmm0
 ; SSE41-NEXT:    retq
 ;
 ; AVX1-LABEL: uitofp_4i64_to_4f32_undef:
@@ -2162,7 +2164,8 @@
 ; AVX1-NEXT:    vandps {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %ymm0, %ymm1
 ; AVX1-NEXT:    vpsrlq $1, %xmm0, %xmm2
 ; AVX1-NEXT:    vorps %ymm1, %ymm2, %ymm1
-; AVX1-NEXT:    vblendvpd %ymm0, %ymm1, %ymm0, %ymm1
+; AVX1-NEXT:    vmovaps %xmm0, %xmm2
+; AVX1-NEXT:    vblendvpd %ymm2, %ymm1, %ymm0, %ymm1
 ; AVX1-NEXT:    vpextrq $1, %xmm1, %rax
 ; AVX1-NEXT:    vcvtsi2ss %rax, %xmm3, %xmm2
 ; AVX1-NEXT:    vmovq %xmm1, %rax
@@ -2176,7 +2179,8 @@
 ; AVX1-NEXT:    vcvtsi2ss %rax, %xmm4, %xmm1
 ; AVX1-NEXT:    vinsertps {{.*#+}} xmm1 = xmm2[0,1,2],xmm1[0]
 ; AVX1-NEXT:    vaddps %xmm1, %xmm1, %xmm2
-; AVX1-NEXT:    vpackssdw %xmm0, %xmm0, %xmm0
+; AVX1-NEXT:    vxorps %xmm3, %xmm3, %xmm3
+; AVX1-NEXT:    vpackssdw %xmm3, %xmm0, %xmm0
 ; AVX1-NEXT:    vblendvps %xmm0, %xmm2, %xmm1, %xmm0
 ; AVX1-NEXT:    vzeroupper
 ; AVX1-NEXT:    retq