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llvm-mirror/test/CodeGen/X86/setcc-logic.ll
Simon Pilgrim fd3b975a9f [X86] combineCMP - fold cmpEQ/NE(TRUNC(X),0) -> cmpEQ/NE(X,0) 
If we are truncating from a i32 source before comparing the result against zero, then see if we can directly compare the source value against zero.

If the upper (truncated) bits are known to be zero then we can compare against that, hopefully increasing the chances of us folding the compare into a EFLAG result of the source's operation.

Fixes PR49028.

Differential Revision: https://reviews.llvm.org/D100491
2021-04-15 13:55:51 +01:00

704 lines
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LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefixes=CHECK,NOBMI
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+bmi | FileCheck %s --check-prefixes=CHECK,BMI
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
}
; PR44565 - https://bugs.llvm.org/show_bug.cgi?id=44565
define i32 @vec_extract_branch(<2 x double> %x) {
; CHECK-LABEL: vec_extract_branch:
; CHECK: # %bb.0:
; CHECK-NEXT: xorpd %xmm1, %xmm1
; CHECK-NEXT: cmpltpd %xmm0, %xmm1
; CHECK-NEXT: movmskpd %xmm1, %eax
; CHECK-NEXT: cmpb $3, %al
; CHECK-NEXT: jne .LBB16_2
; CHECK-NEXT: # %bb.1: # %true
; CHECK-NEXT: movl $42, %eax
; CHECK-NEXT: retq
; CHECK-NEXT: .LBB16_2: # %false
; CHECK-NEXT: movl $88, %eax
; CHECK-NEXT: retq
%t1 = fcmp ogt <2 x double> %x, zeroinitializer
%t2 = extractelement <2 x i1> %t1, i32 0
%t3 = extractelement <2 x i1> %t1, i32 1
%t4 = and i1 %t2, %t3
br i1 %t4, label %true, label %false
true:
ret i32 42
false:
ret i32 88
}
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, <i32 -1, i32 -1, i32 -1, i32 -1>
%b = icmp sgt <4 x i32> %Q, <i32 -1, i32 -1, i32 -1, i32 -1>
%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, <i32 -1, i32 -1, i32 -1, i32 -1>
%b = icmp eq <4 x i32> %Q, <i32 -1, i32 -1, i32 -1, i32 -1>
%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, <i32 -1, i32 -1, i32 -1, i32 -1>
%b = icmp ne <4 x i32> %Q, <i32 -1, i32 -1, i32 -1, i32 -1>
%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, <i32 -1, i32 -1, i32 -1, i32 -1>
%b = icmp sgt <4 x i32> %Q, <i32 -1, i32 -1, i32 -1, i32 -1>
%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
}
; PR44136 - fold cmpeq(or(X,Y),X) --> cmpeq(and(~X,Y),0)
define i1 @or_cmp_eq_i64(i64 %x, i64 %y) {
; NOBMI-LABEL: or_cmp_eq_i64:
; NOBMI: # %bb.0:
; NOBMI-NEXT: notq %rdi
; NOBMI-NEXT: testq %rsi, %rdi
; NOBMI-NEXT: sete %al
; NOBMI-NEXT: retq
;
; BMI-LABEL: or_cmp_eq_i64:
; BMI: # %bb.0:
; BMI-NEXT: andnq %rsi, %rdi, %rax
; BMI-NEXT: sete %al
; BMI-NEXT: retq
%o = or i64 %x, %y
%c = icmp eq i64 %o, %x
ret i1 %c
}
define i1 @or_cmp_ne_i32(i32 %x, i32 %y) {
; NOBMI-LABEL: or_cmp_ne_i32:
; NOBMI: # %bb.0:
; NOBMI-NEXT: notl %esi
; NOBMI-NEXT: testl %edi, %esi
; NOBMI-NEXT: setne %al
; NOBMI-NEXT: retq
;
; BMI-LABEL: or_cmp_ne_i32:
; BMI: # %bb.0:
; BMI-NEXT: andnl %edi, %esi, %eax
; BMI-NEXT: setne %al
; BMI-NEXT: retq
%o = or i32 %x, %y
%c = icmp ne i32 %o, %y
ret i1 %c
}
define i1 @or_cmp_eq_i16(i16 zeroext %x, i16 zeroext %y) {
; NOBMI-LABEL: or_cmp_eq_i16:
; NOBMI: # %bb.0:
; NOBMI-NEXT: notl %edi
; NOBMI-NEXT: testl %esi, %edi
; NOBMI-NEXT: sete %al
; NOBMI-NEXT: retq
;
; BMI-LABEL: or_cmp_eq_i16:
; BMI: # %bb.0:
; BMI-NEXT: andnl %esi, %edi, %eax
; BMI-NEXT: sete %al
; BMI-NEXT: retq
%o = or i16 %x, %y
%c = icmp eq i16 %x, %o
ret i1 %c
}
define i1 @or_cmp_ne_i8(i8 zeroext %x, i8 zeroext %y) {
; CHECK-LABEL: or_cmp_ne_i8:
; CHECK: # %bb.0:
; CHECK-NEXT: notb %sil
; CHECK-NEXT: testb %dil, %sil
; CHECK-NEXT: setne %al
; CHECK-NEXT: retq
%o = or i8 %x, %y
%c = icmp ne i8 %y, %o
ret i1 %c
}
; Don't fold vectors.
define <4 x i32> @or_cmp_eq_v4i32(<4 x i32> %x, <4 x i32> %y) {
; CHECK-LABEL: or_cmp_eq_v4i32:
; CHECK: # %bb.0:
; CHECK-NEXT: por %xmm0, %xmm1
; CHECK-NEXT: pcmpeqd %xmm1, %xmm0
; CHECK-NEXT: retq
%o = or <4 x i32> %x, %y
%c = icmp eq <4 x i32> %o, %x
%s = sext <4 x i1> %c to <4 x i32>
ret <4 x i32> %s
}
define <16 x i8> @or_cmp_ne_v4i32(<16 x i8> %x, <16 x i8> %y) {
; CHECK-LABEL: or_cmp_ne_v4i32:
; CHECK: # %bb.0:
; CHECK-NEXT: por %xmm0, %xmm1
; CHECK-NEXT: pcmpeqb %xmm1, %xmm0
; CHECK-NEXT: pcmpeqd %xmm1, %xmm1
; CHECK-NEXT: pxor %xmm1, %xmm0
; CHECK-NEXT: retq
%o = or <16 x i8> %x, %y
%c = icmp ne <16 x i8> %o, %x
%s = sext <16 x i1> %c to <16 x i8>
ret <16 x i8> %s
}
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