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clang-p2996/llvm/test/CodeGen/X86/setcc.ll
Nikita Popov e506bfa7ae [SDAG] Fix incorrect use of undef for boolean contents (PR63055) 
FoldSetCC() returns UNDEF in a number of cases. However, the SetCC
result must follow BooleanContents. Unless the type is a
pre-legalization i1 or we have UndefinedBooleanContents, the use of
UNDEF will not uphold the requirement that the top bits are either
zero or match the low bit. In such cases, return zero instead.

Fixes https://github.com/llvm/llvm-project/issues/63055.

Differential Revision: https://reviews.llvm.org/D151883
2023-06-01 15:19:22 +02:00

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8.8 KiB
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-apple-darwin | FileCheck %s --check-prefixes=X86
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s --check-prefixes=X64,X64-NOTBM,X64-NOBMI2
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+tbm | FileCheck %s --check-prefixes=X64,X64-NOBMI2,X64-TBM
; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+bmi2 | FileCheck %s --check-prefixes=X64,X64-NOTBM,X64-BMI2
; rdar://7329206
define zeroext i16 @t1(i16 zeroext %x) nounwind readnone ssp {
; X86-LABEL: t1:
; X86: ## %bb.0:
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: cmpw $27, {{[0-9]+}}(%esp)
; X86-NEXT: setae %al
; X86-NEXT: shll $5, %eax
; X86-NEXT: retl
;
; X64-LABEL: t1:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: cmpw $27, %di
; X64-NEXT: setae %al
; X64-NEXT: shll $5, %eax
; X64-NEXT: retq
%t0 = icmp ugt i16 %x, 26
%if = select i1 %t0, i16 32, i16 0
ret i16 %if
}
define zeroext i16 @t2(i16 zeroext %x) nounwind readnone ssp {
; X86-LABEL: t2:
; X86: ## %bb.0:
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: cmpw $26, {{[0-9]+}}(%esp)
; X86-NEXT: setb %al
; X86-NEXT: shll $5, %eax
; X86-NEXT: retl
;
; X64-LABEL: t2:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: cmpw $26, %di
; X64-NEXT: setb %al
; X64-NEXT: shll $5, %eax
; X64-NEXT: retq
%t0 = icmp ult i16 %x, 26
%if = select i1 %t0, i16 32, i16 0
ret i16 %if
}
define i64 @t3(i64 %x) nounwind readnone ssp {
; X86-LABEL: t3:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: cmpl $18, {{[0-9]+}}(%esp)
; X86-NEXT: sbbl $0, %eax
; X86-NEXT: setb %al
; X86-NEXT: movzbl %al, %eax
; X86-NEXT: shll $6, %eax
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: retl
;
; X64-LABEL: t3:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: cmpq $18, %rdi
; X64-NEXT: setb %al
; X64-NEXT: shlq $6, %rax
; X64-NEXT: retq
%t0 = icmp ult i64 %x, 18
%if = select i1 %t0, i64 64, i64 0
ret i64 %if
}
@v4 = common global i32 0, align 4
define i32 @t4(i32 %a) {
; X86-LABEL: t4:
; X86: ## %bb.0:
; X86-NEXT: movl L_v4$non_lazy_ptr, %ecx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: cmpl $1, (%ecx)
; X86-NEXT: adcw $1, %ax
; X86-NEXT: shll $16, %eax
; X86-NEXT: retl
;
; X64-LABEL: t4:
; X64: ## %bb.0:
; X64-NEXT: movq _v4@GOTPCREL(%rip), %rcx
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: cmpl $1, (%rcx)
; X64-NEXT: adcw $1, %ax
; X64-NEXT: shll $16, %eax
; X64-NEXT: retq
%t0 = load i32, ptr @v4, align 4
%not.tobool = icmp eq i32 %t0, 0
%conv.i = sext i1 %not.tobool to i16
%call.lobit = lshr i16 %conv.i, 15
%add.i.1 = add nuw nsw i16 %call.lobit, 1
%conv4.2 = zext i16 %add.i.1 to i32
%add = shl nuw nsw i32 %conv4.2, 16
ret i32 %add
}
define i8 @t5(i32 %a) {
; X86-LABEL: t5:
; X86: ## %bb.0:
; X86-NEXT: cmpl $0, {{[0-9]+}}(%esp)
; X86-NEXT: setns %al
; X86-NEXT: retl
;
; X64-LABEL: t5:
; X64: ## %bb.0:
; X64-NEXT: testl %edi, %edi
; X64-NEXT: setns %al
; X64-NEXT: retq
%.lobit = lshr i32 %a, 31
%trunc = trunc i32 %.lobit to i8
%.not = xor i8 %trunc, 1
ret i8 %.not
}
define zeroext i1 @t6(i32 %a) {
; X86-LABEL: t6:
; X86: ## %bb.0:
; X86-NEXT: cmpl $0, {{[0-9]+}}(%esp)
; X86-NEXT: setns %al
; X86-NEXT: retl
;
; X64-LABEL: t6:
; X64: ## %bb.0:
; X64-NEXT: testl %edi, %edi
; X64-NEXT: setns %al
; X64-NEXT: retq
%.lobit = lshr i32 %a, 31
%trunc = trunc i32 %.lobit to i1
%.not = xor i1 %trunc, 1
ret i1 %.not
}
; PR39174
define zeroext i1 @t7(i32 %0) {
; X86-LABEL: t7:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl $19, %ecx
; X86-NEXT: btl %eax, %ecx
; X86-NEXT: setb %al
; X86-NEXT: retl
;
; X64-LABEL: t7:
; X64: ## %bb.0:
; X64-NEXT: movl $19, %eax
; X64-NEXT: btl %edi, %eax
; X64-NEXT: setb %al
; X64-NEXT: retq
%2 = trunc i32 %0 to i5
%3 = lshr i5 -13, %2
%4 = and i5 %3, 1
%5 = icmp ne i5 %4, 0
ret i1 %5
}
define zeroext i1 @t8(i8 %0, i8 %1) {
; X86-LABEL: t8:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: btl %eax, %ecx
; X86-NEXT: setb %al
; X86-NEXT: retl
;
; X64-LABEL: t8:
; X64: ## %bb.0:
; X64-NEXT: btl %esi, %edi
; X64-NEXT: setb %al
; X64-NEXT: retq
%3 = lshr i8 %0, %1
%4 = and i8 %3, 1
%5 = icmp ne i8 %4, 0
ret i1 %5
}
define i64 @t9(i32 %0, i32 %1) {
; X86-LABEL: t9:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: btl %edx, %ecx
; X86-NEXT: setb %al
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: retl
;
; X64-NOBMI2-LABEL: t9:
; X64-NOBMI2: ## %bb.0:
; X64-NOBMI2-NEXT: xorl %eax, %eax
; X64-NOBMI2-NEXT: btl %esi, %edi
; X64-NOBMI2-NEXT: setb %al
; X64-NOBMI2-NEXT: retq
;
; X64-BMI2-LABEL: t9:
; X64-BMI2: ## %bb.0:
; X64-BMI2-NEXT: shrxl %esi, %edi, %eax
; X64-BMI2-NEXT: andl $1, %eax
; X64-BMI2-NEXT: retq
%3 = lshr i32 %0, %1
%4 = and i32 %3, 1
%5 = icmp ne i32 %4, 0
%6 = zext i1 %5 to i64
ret i64 %6
}
define i32 @t10(i32 %0, i32 %1) {
; X86-LABEL: t10:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: btl %edx, %ecx
; X86-NEXT: setae %al
; X86-NEXT: retl
;
; X64-LABEL: t10:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: btl %esi, %edi
; X64-NEXT: setae %al
; X64-NEXT: retq
%3 = lshr i32 %0, %1
%4 = and i32 %3, 1
%5 = xor i32 %4, 1
ret i32 %5
}
define i32 @t11(i32 %0, i32 %1) {
; X86-LABEL: t11:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: btl %edx, %ecx
; X86-NEXT: setae %al
; X86-NEXT: retl
;
; X64-LABEL: t11:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: btl %esi, %edi
; X64-NEXT: setae %al
; X64-NEXT: retq
%3 = xor i32 %0, -1
%4 = lshr i32 %3, %1
%5 = and i32 %4, 1
ret i32 %5
}
define i32 @t12(i32 %0, i32 %1) {
; X86-LABEL: t12:
; X86: ## %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: movl {{[0-9]+}}(%esp), %edx
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: btl %edx, %ecx
; X86-NEXT: setb %al
; X86-NEXT: retl
;
; X64-LABEL: t12:
; X64: ## %bb.0:
; X64-NEXT: xorl %eax, %eax
; X64-NEXT: btl %esi, %edi
; X64-NEXT: setb %al
; X64-NEXT: retq
%3 = xor i32 %0, -1
%4 = lshr i32 %3, %1
%5 = and i32 %4, 1
%6 = xor i32 %5, 1
ret i32 %6
}
define i16 @shift_and(i16 %a) {
; X86-LABEL: shift_and:
; X86: ## %bb.0:
; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax
; X86-NEXT: andb $4, %al
; X86-NEXT: shrb $2, %al
; X86-NEXT: movzbl %al, %eax
; X86-NEXT: ## kill: def $ax killed $ax killed $eax
; X86-NEXT: retl
;
; X64-NOTBM-LABEL: shift_and:
; X64-NOTBM: ## %bb.0:
; X64-NOTBM-NEXT: movl %edi, %eax
; X64-NOTBM-NEXT: shrl $10, %eax
; X64-NOTBM-NEXT: andl $1, %eax
; X64-NOTBM-NEXT: ## kill: def $ax killed $ax killed $eax
; X64-NOTBM-NEXT: retq
;
; X64-TBM-LABEL: shift_and:
; X64-TBM: ## %bb.0:
; X64-TBM-NEXT: bextrl $266, %edi, %eax ## imm = 0x10A
; X64-TBM-NEXT: ## kill: def $ax killed $ax killed $eax
; X64-TBM-NEXT: retq
%and = and i16 %a, 1024
%cmp = icmp ne i16 %and, 0
%conv = zext i1 %cmp to i16
ret i16 %conv
}
define i32 @PR55138(i32 %x) {
; X86-LABEL: PR55138:
; X86: ## %bb.0:
; X86-NEXT: movzbl {{[0-9]+}}(%esp), %ecx
; X86-NEXT: andl $15, %ecx
; X86-NEXT: movl $27030, %edx ## imm = 0x6996
; X86-NEXT: xorl %eax, %eax
; X86-NEXT: btl %ecx, %edx
; X86-NEXT: setb %al
; X86-NEXT: retl
;
; X64-NOBMI2-LABEL: PR55138:
; X64-NOBMI2: ## %bb.0:
; X64-NOBMI2-NEXT: andl $15, %edi
; X64-NOBMI2-NEXT: movl $27030, %ecx ## imm = 0x6996
; X64-NOBMI2-NEXT: xorl %eax, %eax
; X64-NOBMI2-NEXT: btl %edi, %ecx
; X64-NOBMI2-NEXT: setb %al
; X64-NOBMI2-NEXT: retq
;
; X64-BMI2-LABEL: PR55138:
; X64-BMI2: ## %bb.0:
; X64-BMI2-NEXT: andb $15, %dil
; X64-BMI2-NEXT: movl $27030, %eax ## imm = 0x6996
; X64-BMI2-NEXT: shrxl %edi, %eax, %eax
; X64-BMI2-NEXT: andl $1, %eax
; X64-BMI2-NEXT: retq
%urem = and i32 %x, 15
%shr = lshr i32 27030, %urem
%and = and i32 %shr, 1
ret i32 %and
}
define i64 @pr63055(double %arg) {
; X86-LABEL: pr63055:
; X86: ## %bb.0:
; X86-NEXT: movl $1, %eax
; X86-NEXT: xorl %edx, %edx
; X86-NEXT: retl
;
; X64-LABEL: pr63055:
; X64: ## %bb.0:
; X64-NEXT: movl $1, %eax
; X64-NEXT: retq
%fcmp = fcmp une double 0x7FF8000000000000, %arg
%ext = zext i1 %fcmp to i64
ret i64 %ext
}
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