; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s define zeroext i1 @all_bits_clear(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_bits_clear: ; CHECK: # %bb.0: ; CHECK-NEXT: orl %esi, %edi ; CHECK-NEXT: sete %al ; CHECK-NEXT: retq %a = icmp eq i32 %P, 0 %b = icmp eq i32 %Q, 0 %c = and i1 %a, %b ret i1 %c } define zeroext i1 @all_sign_bits_clear(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_sign_bits_clear: ; CHECK: # %bb.0: ; CHECK-NEXT: orl %esi, %edi ; CHECK-NEXT: setns %al ; CHECK-NEXT: retq %a = icmp sgt i32 %P, -1 %b = icmp sgt i32 %Q, -1 %c = and i1 %a, %b ret i1 %c } define zeroext i1 @all_bits_set(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_bits_set: ; CHECK: # %bb.0: ; CHECK-NEXT: andl %esi, %edi ; CHECK-NEXT: cmpl $-1, %edi ; CHECK-NEXT: sete %al ; CHECK-NEXT: retq %a = icmp eq i32 %P, -1 %b = icmp eq i32 %Q, -1 %c = and i1 %a, %b ret i1 %c } define zeroext i1 @all_sign_bits_set(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_sign_bits_set: ; CHECK: # %bb.0: ; CHECK-NEXT: movl %edi, %eax ; CHECK-NEXT: andl %esi, %eax ; CHECK-NEXT: shrl $31, %eax ; CHECK-NEXT: # kill: def $al killed $al killed $eax ; CHECK-NEXT: retq %a = icmp slt i32 %P, 0 %b = icmp slt i32 %Q, 0 %c = and i1 %a, %b ret i1 %c } define zeroext i1 @any_bits_set(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_bits_set: ; CHECK: # %bb.0: ; CHECK-NEXT: orl %esi, %edi ; CHECK-NEXT: setne %al ; CHECK-NEXT: retq %a = icmp ne i32 %P, 0 %b = icmp ne i32 %Q, 0 %c = or i1 %a, %b ret i1 %c } define zeroext i1 @any_sign_bits_set(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_sign_bits_set: ; CHECK: # %bb.0: ; CHECK-NEXT: movl %edi, %eax ; CHECK-NEXT: orl %esi, %eax ; CHECK-NEXT: shrl $31, %eax ; CHECK-NEXT: # kill: def $al killed $al killed $eax ; CHECK-NEXT: retq %a = icmp slt i32 %P, 0 %b = icmp slt i32 %Q, 0 %c = or i1 %a, %b ret i1 %c } define zeroext i1 @any_bits_clear(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_bits_clear: ; CHECK: # %bb.0: ; CHECK-NEXT: andl %esi, %edi ; CHECK-NEXT: cmpl $-1, %edi ; CHECK-NEXT: setne %al ; CHECK-NEXT: retq %a = icmp ne i32 %P, -1 %b = icmp ne i32 %Q, -1 %c = or i1 %a, %b ret i1 %c } define zeroext i1 @any_sign_bits_clear(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_sign_bits_clear: ; CHECK: # %bb.0: ; CHECK-NEXT: testl %esi, %edi ; CHECK-NEXT: setns %al ; CHECK-NEXT: retq %a = icmp sgt i32 %P, -1 %b = icmp sgt i32 %Q, -1 %c = or i1 %a, %b ret i1 %c } ; PR3351 - (P == 0) & (Q == 0) -> (P|Q) == 0 define i32 @all_bits_clear_branch(i32* %P, i32* %Q) nounwind { ; CHECK-LABEL: all_bits_clear_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: orq %rsi, %rdi ; CHECK-NEXT: jne .LBB8_2 ; CHECK-NEXT: # %bb.1: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB8_2: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq entry: %a = icmp eq i32* %P, null %b = icmp eq i32* %Q, null %c = and i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @all_sign_bits_clear_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_sign_bits_clear_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: testl %edi, %edi ; CHECK-NEXT: js .LBB9_3 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: testl %esi, %esi ; CHECK-NEXT: js .LBB9_3 ; CHECK-NEXT: # %bb.2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB9_3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq entry: %a = icmp sgt i32 %P, -1 %b = icmp sgt i32 %Q, -1 %c = and i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @all_bits_set_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_bits_set_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: cmpl $-1, %edi ; CHECK-NEXT: jne .LBB10_3 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: cmpl $-1, %esi ; CHECK-NEXT: jne .LBB10_3 ; CHECK-NEXT: # %bb.2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB10_3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq entry: %a = icmp eq i32 %P, -1 %b = icmp eq i32 %Q, -1 %c = and i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @all_sign_bits_set_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: all_sign_bits_set_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: testl %edi, %edi ; CHECK-NEXT: jns .LBB11_3 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: testl %esi, %esi ; CHECK-NEXT: jns .LBB11_3 ; CHECK-NEXT: # %bb.2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB11_3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq entry: %a = icmp slt i32 %P, 0 %b = icmp slt i32 %Q, 0 %c = and i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } ; PR3351 - (P != 0) | (Q != 0) -> (P|Q) != 0 define i32 @any_bits_set_branch(i32* %P, i32* %Q) nounwind { ; CHECK-LABEL: any_bits_set_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: orq %rsi, %rdi ; CHECK-NEXT: je .LBB12_2 ; CHECK-NEXT: # %bb.1: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB12_2: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq entry: %a = icmp ne i32* %P, null %b = icmp ne i32* %Q, null %c = or i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @any_sign_bits_set_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_sign_bits_set_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: testl %edi, %edi ; CHECK-NEXT: js .LBB13_2 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: testl %esi, %esi ; CHECK-NEXT: js .LBB13_2 ; CHECK-NEXT: # %bb.3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB13_2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq entry: %a = icmp slt i32 %P, 0 %b = icmp slt i32 %Q, 0 %c = or i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @any_bits_clear_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_bits_clear_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: cmpl $-1, %edi ; CHECK-NEXT: jne .LBB14_2 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: cmpl $-1, %esi ; CHECK-NEXT: jne .LBB14_2 ; CHECK-NEXT: # %bb.3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB14_2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq entry: %a = icmp ne i32 %P, -1 %b = icmp ne i32 %Q, -1 %c = or i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define i32 @any_sign_bits_clear_branch(i32 %P, i32 %Q) nounwind { ; CHECK-LABEL: any_sign_bits_clear_branch: ; CHECK: # %bb.0: # %entry ; CHECK-NEXT: testl %edi, %edi ; CHECK-NEXT: jns .LBB15_2 ; CHECK-NEXT: # %bb.1: # %entry ; CHECK-NEXT: testl %esi, %esi ; CHECK-NEXT: jns .LBB15_2 ; CHECK-NEXT: # %bb.3: # %return ; CHECK-NEXT: movl $192, %eax ; CHECK-NEXT: retq ; CHECK-NEXT: .LBB15_2: # %bb1 ; CHECK-NEXT: movl $4, %eax ; CHECK-NEXT: retq entry: %a = icmp sgt i32 %P, -1 %b = icmp sgt i32 %Q, -1 %c = or i1 %a, %b br i1 %c, label %bb1, label %return bb1: ret i32 4 return: ret i32 192 } define <4 x i1> @all_bits_clear_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: all_bits_clear_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: por %xmm1, %xmm0 ; CHECK-NEXT: pxor %xmm1, %xmm1 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp eq <4 x i32> %P, zeroinitializer %b = icmp eq <4 x i32> %Q, zeroinitializer %c = and <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @all_sign_bits_clear_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: all_sign_bits_clear_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: por %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm1 ; CHECK-NEXT: pcmpgtd %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp sgt <4 x i32> %P, %b = icmp sgt <4 x i32> %Q, %c = and <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @all_bits_set_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: all_bits_set_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: pand %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm1 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp eq <4 x i32> %P, %b = icmp eq <4 x i32> %Q, %c = and <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @all_sign_bits_set_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: all_sign_bits_set_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: pand %xmm1, %xmm0 ; CHECK-NEXT: pxor %xmm1, %xmm1 ; CHECK-NEXT: pcmpgtd %xmm0, %xmm1 ; CHECK-NEXT: movdqa %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp slt <4 x i32> %P, zeroinitializer %b = icmp slt <4 x i32> %Q, zeroinitializer %c = and <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @any_bits_set_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: any_bits_set_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: por %xmm1, %xmm0 ; CHECK-NEXT: pxor %xmm1, %xmm1 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm1 ; CHECK-NEXT: pxor %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp ne <4 x i32> %P, zeroinitializer %b = icmp ne <4 x i32> %Q, zeroinitializer %c = or <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @any_sign_bits_set_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: any_sign_bits_set_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: por %xmm1, %xmm0 ; CHECK-NEXT: pxor %xmm1, %xmm1 ; CHECK-NEXT: pcmpgtd %xmm0, %xmm1 ; CHECK-NEXT: movdqa %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp slt <4 x i32> %P, zeroinitializer %b = icmp slt <4 x i32> %Q, zeroinitializer %c = or <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @any_bits_clear_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: any_bits_clear_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: pand %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm1 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm0 ; CHECK-NEXT: pxor %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp ne <4 x i32> %P, %b = icmp ne <4 x i32> %Q, %c = or <4 x i1> %a, %b ret <4 x i1> %c } define <4 x i1> @any_sign_bits_clear_vec(<4 x i32> %P, <4 x i32> %Q) nounwind { ; CHECK-LABEL: any_sign_bits_clear_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: pand %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm1, %xmm1 ; CHECK-NEXT: pcmpgtd %xmm1, %xmm0 ; CHECK-NEXT: retq %a = icmp sgt <4 x i32> %P, %b = icmp sgt <4 x i32> %Q, %c = or <4 x i1> %a, %b ret <4 x i1> %c } define zeroext i1 @ne_neg1_and_ne_zero(i64 %x) nounwind { ; CHECK-LABEL: ne_neg1_and_ne_zero: ; CHECK: # %bb.0: ; CHECK-NEXT: incq %rdi ; CHECK-NEXT: cmpq $1, %rdi ; CHECK-NEXT: seta %al ; CHECK-NEXT: retq %cmp1 = icmp ne i64 %x, -1 %cmp2 = icmp ne i64 %x, 0 %and = and i1 %cmp1, %cmp2 ret i1 %and } ; PR32401 - https://bugs.llvm.org/show_bug.cgi?id=32401 define zeroext i1 @and_eq(i8 %a, i8 %b, i8 %c, i8 %d) nounwind { ; CHECK-LABEL: and_eq: ; CHECK: # %bb.0: ; CHECK-NEXT: xorl %esi, %edi ; CHECK-NEXT: xorl %ecx, %edx ; CHECK-NEXT: orb %dl, %dil ; CHECK-NEXT: sete %al ; CHECK-NEXT: retq %cmp1 = icmp eq i8 %a, %b %cmp2 = icmp eq i8 %c, %d %and = and i1 %cmp1, %cmp2 ret i1 %and } define zeroext i1 @or_ne(i8 %a, i8 %b, i8 %c, i8 %d) nounwind { ; CHECK-LABEL: or_ne: ; CHECK: # %bb.0: ; CHECK-NEXT: xorl %esi, %edi ; CHECK-NEXT: xorl %ecx, %edx ; CHECK-NEXT: orb %dl, %dil ; CHECK-NEXT: setne %al ; CHECK-NEXT: retq %cmp1 = icmp ne i8 %a, %b %cmp2 = icmp ne i8 %c, %d %or = or i1 %cmp1, %cmp2 ret i1 %or } ; This should not be transformed because vector compares + bitwise logic are faster. define <4 x i1> @and_eq_vec(<4 x i32> %a, <4 x i32> %b, <4 x i32> %c, <4 x i32> %d) nounwind { ; CHECK-LABEL: and_eq_vec: ; CHECK: # %bb.0: ; CHECK-NEXT: pcmpeqd %xmm1, %xmm0 ; CHECK-NEXT: pcmpeqd %xmm3, %xmm2 ; CHECK-NEXT: pand %xmm2, %xmm0 ; CHECK-NEXT: retq %cmp1 = icmp eq <4 x i32> %a, %b %cmp2 = icmp eq <4 x i32> %c, %d %and = and <4 x i1> %cmp1, %cmp2 ret <4 x i1> %and } define i1 @or_icmps_const_1bit_diff(i8 %x) { ; CHECK-LABEL: or_icmps_const_1bit_diff: ; CHECK: # %bb.0: ; CHECK-NEXT: addb $-43, %dil ; CHECK-NEXT: testb $-3, %dil ; CHECK-NEXT: sete %al ; CHECK-NEXT: retq %a = icmp eq i8 %x, 43 %b = icmp eq i8 %x, 45 %r = or i1 %a, %b ret i1 %r } define i1 @and_icmps_const_1bit_diff(i32 %x) { ; CHECK-LABEL: and_icmps_const_1bit_diff: ; CHECK: # %bb.0: ; CHECK-NEXT: addl $-44, %edi ; CHECK-NEXT: testl $-17, %edi ; CHECK-NEXT: setne %al ; CHECK-NEXT: retq %a = icmp ne i32 %x, 44 %b = icmp ne i32 %x, 60 %r = and i1 %a, %b ret i1 %r } ; Negative test - extra use prevents optimization define i1 @or_icmps_const_1bit_diff_extra_use(i8 %x, i8* %p) { ; CHECK-LABEL: or_icmps_const_1bit_diff_extra_use: ; CHECK: # %bb.0: ; CHECK-NEXT: cmpb $45, %dil ; CHECK-NEXT: sete %cl ; CHECK-NEXT: cmpb $43, %dil ; CHECK-NEXT: sete %al ; CHECK-NEXT: sete (%rsi) ; CHECK-NEXT: orb %cl, %al ; CHECK-NEXT: retq %a = icmp eq i8 %x, 43 %b = icmp eq i8 %x, 45 %r = or i1 %a, %b %z = zext i1 %a to i8 store i8 %z, i8* %p ret i1 %r } ; Negative test - constant diff is >1 bit define i1 @and_icmps_const_not1bit_diff(i32 %x) { ; CHECK-LABEL: and_icmps_const_not1bit_diff: ; CHECK: # %bb.0: ; CHECK-NEXT: cmpl $44, %edi ; CHECK-NEXT: setne %cl ; CHECK-NEXT: cmpl $92, %edi ; CHECK-NEXT: setne %al ; CHECK-NEXT: andb %cl, %al ; CHECK-NEXT: retq %a = icmp ne i32 %x, 44 %b = icmp ne i32 %x, 92 %r = and i1 %a, %b ret i1 %r } ; Negative test - wrong comparison define i1 @and_icmps_const_1bit_diff_wrong_pred(i32 %x) { ; CHECK-LABEL: and_icmps_const_1bit_diff_wrong_pred: ; CHECK: # %bb.0: ; CHECK-NEXT: cmpl $43, %edi ; CHECK-NEXT: sete %cl ; CHECK-NEXT: cmpl $45, %edi ; CHECK-NEXT: setl %al ; CHECK-NEXT: orb %cl, %al ; CHECK-NEXT: retq %a = icmp eq i32 %x, 43 %b = icmp slt i32 %x, 45 %r = or i1 %a, %b ret i1 %r } ; Negative test - no common operand define i1 @and_icmps_const_1bit_diff_common_op(i32 %x, i32 %y) { ; CHECK-LABEL: and_icmps_const_1bit_diff_common_op: ; CHECK: # %bb.0: ; CHECK-NEXT: cmpl $43, %edi ; CHECK-NEXT: sete %cl ; CHECK-NEXT: cmpl $45, %esi ; CHECK-NEXT: sete %al ; CHECK-NEXT: orb %cl, %al ; CHECK-NEXT: retq %a = icmp eq i32 %x, 43 %b = icmp eq i32 %y, 45 %r = or i1 %a, %b ret i1 %r }