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llvm-mirror/test/CodeGen/Mips/atomic.ll
Simon Dardis 2c7cba627f [mips][atomics] Fix atomic instruction descriptions and uses. 
PR27458 highlights that the MIPS backend does not have well formed
MIR for atomic operations (among other errors).

This patch adds expands and corrects the LL/SC descriptions and uses
for MIPS(64).

Reviewers: dsanders, vkalintiris

Differential Review: http://reviews.llvm.org/D19719

llvm-svn: 272655
2016-06-14 11:29:28 +00:00

549 lines
21 KiB
LLVM
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; RUN: llc -march=mipsel --disable-machine-licm -mcpu=mips32 -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS32-ANY -check-prefix=NO-SEB-SEH -check-prefix=CHECK-EL -check-prefix=NOT-MICROMIPS
; RUN: llc -march=mipsel --disable-machine-licm -mcpu=mips32r2 -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS32-ANY -check-prefix=HAS-SEB-SEH -check-prefix=CHECK-EL -check-prefix=NOT-MICROMIPS
; RUN: llc -march=mipsel --disable-machine-licm -mcpu=mips32r6 -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS32-ANY -check-prefix=HAS-SEB-SEH -check-prefix=CHECK-EL -check-prefix=MIPSR6
; RUN: llc -march=mips64el --disable-machine-licm -mcpu=mips4 -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS64-ANY -check-prefix=NO-SEB-SEH -check-prefix=CHECK-EL -check-prefix=NOT-MICROMIPS
; RUN: llc -march=mips64el --disable-machine-licm -mcpu=mips64 -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS64-ANY -check-prefix=NO-SEB-SEH -check-prefix=CHECK-EL -check-prefix=NOT-MICROMIPS
; RUN: llc -march=mips64el --disable-machine-licm -mcpu=mips64r2 -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS64-ANY -check-prefix=HAS-SEB-SEH -check-prefix=CHECK-EL -check-prefix=NOT-MICROMIPS
; RUN: llc -march=mips64el --disable-machine-licm -mcpu=mips64r6 -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS64-ANY -check-prefix=HAS-SEB-SEH -check-prefix=CHECK-EL -check-prefix=MIPSR6
; RUN: llc -march=mips64 -O0 -mcpu=mips64r6 -relocation-model=pic -verify-machineinstrs < %s | FileCheck %s \
; RUN: -check-prefix=ALL-LABEL -check-prefix=MIPS64-ANY -check-prefix=O0
; RUN: llc -march=mipsel --disable-machine-licm -mcpu=mips32r2 -mattr=micromips -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS32-ANY -check-prefix=HAS-SEB-SEH -check-prefix=CHECK-EL -check-prefix=MICROMIPS
; Keep one big-endian check so that we don't reduce testing, but don't add more
; since endianness doesn't affect the body of the atomic operations.
; RUN: llc -march=mips --disable-machine-licm -mcpu=mips32 -relocation-model=pic < %s | FileCheck %s \
; RUN: -check-prefix=ALL -check-prefix=MIPS32-ANY -check-prefix=NO-SEB-SEH -check-prefix=CHECK-EB -check-prefix=NOT-MICROMIPS
@x = common global i32 0, align 4
define i32 @AtomicLoadAdd32(i32 signext %incr) nounwind {
entry:
%0 = atomicrmw add i32* @x, i32 %incr monotonic
ret i32 %0
; ALL-LABEL: AtomicLoadAdd32:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(x)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(x)(
; O0: $[[BB0:[A-Z_0-9]+]]:
; O0: ld $[[R1:[0-9]+]]
; O0-NEXT: ll $[[R2:[0-9]+]], 0($[[R1]])
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R3:[0-9]+]], 0($[[R0]])
; ALL: addu $[[R4:[0-9]+]], $[[R3]], $4
; ALL: sc $[[R4]], 0($[[R0]])
; NOT-MICROMIPS: beqz $[[R4]], $[[BB0]]
; MICROMIPS: beqzc $[[R4]], $[[BB0]]
; MIPSR6: beqzc $[[R4]], $[[BB0]]
}
define i32 @AtomicLoadNand32(i32 signext %incr) nounwind {
entry:
%0 = atomicrmw nand i32* @x, i32 %incr monotonic
ret i32 %0
; ALL-LABEL: AtomicLoadNand32:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(x)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(x)(
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R1:[0-9]+]], 0($[[R0]])
; ALL: and $[[R3:[0-9]+]], $[[R1]], $4
; ALL: nor $[[R2:[0-9]+]], $zero, $[[R3]]
; ALL: sc $[[R2]], 0($[[R0]])
; NOT-MICROMIPS: beqz $[[R2]], $[[BB0]]
; MICROMIPS: beqzc $[[R2]], $[[BB0]]
; MIPSR6: beqzc $[[R2]], $[[BB0]]
}
define i32 @AtomicSwap32(i32 signext %newval) nounwind {
entry:
%newval.addr = alloca i32, align 4
store i32 %newval, i32* %newval.addr, align 4
%tmp = load i32, i32* %newval.addr, align 4
%0 = atomicrmw xchg i32* @x, i32 %tmp monotonic
ret i32 %0
; ALL-LABEL: AtomicSwap32:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(x)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(x)
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll ${{[0-9]+}}, 0($[[R0]])
; ALL: sc $[[R2:[0-9]+]], 0($[[R0]])
; NOT-MICROMIPS: beqz $[[R2]], $[[BB0]]
; MICROMIPS: beqzc $[[R2]], $[[BB0]]
; MIPSR6: beqzc $[[R2]], $[[BB0]]
}
define i32 @AtomicCmpSwap32(i32 signext %oldval, i32 signext %newval) nounwind {
entry:
%newval.addr = alloca i32, align 4
store i32 %newval, i32* %newval.addr, align 4
%tmp = load i32, i32* %newval.addr, align 4
%0 = cmpxchg i32* @x, i32 %oldval, i32 %tmp monotonic monotonic
%1 = extractvalue { i32, i1 } %0, 0
ret i32 %1
; ALL-LABEL: AtomicCmpSwap32:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(x)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(x)(
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $2, 0($[[R0]])
; NOT-MICROMIPS: bne $2, $4, $[[BB1:[A-Z_0-9]+]]
; MICROMIPS: bne $2, $4, $[[BB1:[A-Z_0-9]+]]
; MIPSR6: bnec $2, $4, $[[BB1:[A-Z_0-9]+]]
; ALL: sc $[[R2:[0-9]+]], 0($[[R0]])
; NOT-MICROMIPS: beqz $[[R2]], $[[BB0]]
; MICROMIPS: beqzc $[[R2]], $[[BB0]]
; MIPSR6: beqzc $[[R2]], $[[BB0]]
; ALL: $[[BB1]]:
}
@y = common global i8 0, align 1
define signext i8 @AtomicLoadAdd8(i8 signext %incr) nounwind {
entry:
%0 = atomicrmw add i8* @y, i8 %incr monotonic
ret i8 %0
; ALL-LABEL: AtomicLoadAdd8:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(y)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(y)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: sllv $[[R9:[0-9]+]], $4, $[[R5]]
; O0: $[[BB0:[A-Z_0-9]+]]:
; O0: ld $[[R10:[0-9]+]]
; O0-NEXT: ll $[[R11:[0-9]+]], 0($[[R10]])
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R12:[0-9]+]], 0($[[R2]])
; ALL: addu $[[R13:[0-9]+]], $[[R12]], $[[R9]]
; ALL: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
; ALL: and $[[R15:[0-9]+]], $[[R12]], $[[R8]]
; ALL: or $[[R16:[0-9]+]], $[[R15]], $[[R14]]
; ALL: sc $[[R16]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R16]], $[[BB0]]
; MICROMIPS: beqzc $[[R16]], $[[BB0]]
; MIPSR6: beqzc $[[R16]], $[[BB0]]
; ALL: and $[[R17:[0-9]+]], $[[R12]], $[[R7]]
; ALL: srlv $[[R18:[0-9]+]], $[[R17]], $[[R5]]
; NO-SEB-SEH: sll $[[R19:[0-9]+]], $[[R18]], 24
; NO-SEB-SEH: sra $2, $[[R19]], 24
; HAS-SEB-SEH: seb $2, $[[R18]]
}
define signext i8 @AtomicLoadSub8(i8 signext %incr) nounwind {
entry:
%0 = atomicrmw sub i8* @y, i8 %incr monotonic
ret i8 %0
; ALL-LABEL: AtomicLoadSub8:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(y)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(y)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: sllv $[[R9:[0-9]+]], $4, $[[R5]]
; O0: $[[BB0:[A-Z_0-9]+]]:
; O0: ld $[[R10:[0-9]+]]
; O0-NEXT: ll $[[R11:[0-9]+]], 0($[[R10]])
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R12:[0-9]+]], 0($[[R2]])
; ALL: subu $[[R13:[0-9]+]], $[[R12]], $[[R9]]
; ALL: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
; ALL: and $[[R15:[0-9]+]], $[[R12]], $[[R8]]
; ALL: or $[[R16:[0-9]+]], $[[R15]], $[[R14]]
; ALL: sc $[[R16]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R16]], $[[BB0]]
; MICROMIPS: beqzc $[[R16]], $[[BB0]]
; MIPSR6: beqzc $[[R16]], $[[BB0]]
; ALL: and $[[R17:[0-9]+]], $[[R12]], $[[R7]]
; ALL: srlv $[[R18:[0-9]+]], $[[R17]], $[[R5]]
; NO-SEB-SEH: sll $[[R19:[0-9]+]], $[[R18]], 24
; NO-SEB-SEH: sra $2, $[[R19]], 24
; HAS-SEB-SEH:seb $2, $[[R18]]
}
define signext i8 @AtomicLoadNand8(i8 signext %incr) nounwind {
entry:
%0 = atomicrmw nand i8* @y, i8 %incr monotonic
ret i8 %0
; ALL-LABEL: AtomicLoadNand8:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(y)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(y)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: sllv $[[R9:[0-9]+]], $4, $[[R5]]
; O0: $[[BB0:[A-Z_0-9]+]]:
; O0: ld $[[R10:[0-9]+]]
; O0-NEXT: ll $[[R11:[0-9]+]], 0($[[R10]])
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R12:[0-9]+]], 0($[[R2]])
; ALL: and $[[R13:[0-9]+]], $[[R12]], $[[R9]]
; ALL: nor $[[R14:[0-9]+]], $zero, $[[R13]]
; ALL: and $[[R15:[0-9]+]], $[[R14]], $[[R7]]
; ALL: and $[[R16:[0-9]+]], $[[R12]], $[[R8]]
; ALL: or $[[R17:[0-9]+]], $[[R16]], $[[R15]]
; ALL: sc $[[R17]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R17]], $[[BB0]]
; MICROMIPS: beqzc $[[R17]], $[[BB0]]
; MIPSR6: beqzc $[[R17]], $[[BB0]]
; ALL: and $[[R18:[0-9]+]], $[[R12]], $[[R7]]
; ALL: srlv $[[R19:[0-9]+]], $[[R18]], $[[R5]]
; NO-SEB-SEH: sll $[[R20:[0-9]+]], $[[R19]], 24
; NO-SEB-SEH: sra $2, $[[R20]], 24
; HAS-SEB-SEH: seb $2, $[[R19]]
}
define signext i8 @AtomicSwap8(i8 signext %newval) nounwind {
entry:
%0 = atomicrmw xchg i8* @y, i8 %newval monotonic
ret i8 %0
; ALL-LABEL: AtomicSwap8:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(y)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(y)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: sllv $[[R9:[0-9]+]], $4, $[[R5]]
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R10:[0-9]+]], 0($[[R2]])
; ALL: and $[[R18:[0-9]+]], $[[R9]], $[[R7]]
; ALL: and $[[R13:[0-9]+]], $[[R10]], $[[R8]]
; ALL: or $[[R14:[0-9]+]], $[[R13]], $[[R18]]
; ALL: sc $[[R14]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R14]], $[[BB0]]
; MICROMIPS: beqzc $[[R14]], $[[BB0]]
; MIPSR6: beqzc $[[R14]], $[[BB0]]
; ALL: and $[[R15:[0-9]+]], $[[R10]], $[[R7]]
; ALL: srlv $[[R16:[0-9]+]], $[[R15]], $[[R5]]
; NO-SEB-SEH: sll $[[R17:[0-9]+]], $[[R16]], 24
; NO-SEB-SEH: sra $2, $[[R17]], 24
; HAS-SEB-SEH: seb $2, $[[R16]]
}
define signext i8 @AtomicCmpSwap8(i8 signext %oldval, i8 signext %newval) nounwind {
entry:
%pair0 = cmpxchg i8* @y, i8 %oldval, i8 %newval monotonic monotonic
%0 = extractvalue { i8, i1 } %pair0, 0
ret i8 %0
; ALL-LABEL: AtomicCmpSwap8:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(y)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(y)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: andi $[[R9:[0-9]+]], $4, 255
; ALL: sllv $[[R10:[0-9]+]], $[[R9]], $[[R5]]
; ALL: andi $[[R11:[0-9]+]], $5, 255
; ALL: sllv $[[R12:[0-9]+]], $[[R11]], $[[R5]]
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R13:[0-9]+]], 0($[[R2]])
; ALL: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
; NOT-MICROMIPS: bne $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; MICROMIPS: bne $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; MIPSR6: bnec $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; ALL: and $[[R15:[0-9]+]], $[[R13]], $[[R8]]
; ALL: or $[[R16:[0-9]+]], $[[R15]], $[[R12]]
; ALL: sc $[[R16]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R16]], $[[BB0]]
; MICROMIPS: beqzc $[[R16]], $[[BB0]]
; MIPSR6: beqzc $[[R16]], $[[BB0]]
; ALL: $[[BB1]]:
; ALL: srlv $[[R17:[0-9]+]], $[[R14]], $[[R5]]
; NO-SEB-SEH: sll $[[R18:[0-9]+]], $[[R17]], 24
; NO-SEB-SEH: sra $2, $[[R18]], 24
; HAS-SEB-SEH: seb $2, $[[R17]]
}
define i1 @AtomicCmpSwapRes8(i8* %ptr, i8 signext %oldval, i8 signext %newval) nounwind {
entry:
%0 = cmpxchg i8* %ptr, i8 %oldval, i8 %newval monotonic monotonic
%1 = extractvalue { i8, i1 } %0, 1
ret i1 %1
; ALL-LABEL: AtomicCmpSwapRes8
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $4, $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $4, 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 255
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: andi $[[R9:[0-9]+]], $5, 255
; ALL: sllv $[[R10:[0-9]+]], $[[R9]], $[[R5]]
; ALL: andi $[[R11:[0-9]+]], $6, 255
; ALL: sllv $[[R12:[0-9]+]], $[[R11]], $[[R5]]
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R13:[0-9]+]], 0($[[R2]])
; ALL: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
; NOT-MICROMIPS: bne $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; MICROMIPS: bne $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; MIPSR6: bnec $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
; ALL: and $[[R15:[0-9]+]], $[[R13]], $[[R8]]
; ALL: or $[[R16:[0-9]+]], $[[R15]], $[[R12]]
; ALL: sc $[[R16]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R16]], $[[BB0]]
; MICROMIPS: beqzc $[[R16]], $[[BB0]]
; MIPSR6: beqzc $[[R16]], $[[BB0]]
; ALL: $[[BB1]]:
; ALL: srlv $[[R17:[0-9]+]], $[[R14]], $[[R5]]
; NO-SEB-SEH: sll $[[R18:[0-9]+]], $[[R17]], 24
; NO-SEB-SEH: sra $[[R19:[0-9]+]], $[[R18]], 24
; FIXME: -march=mips produces a redundant sign extension here...
; NO-SEB-SEH: sll $[[R20:[0-9]+]], $5, 24
; NO-SEB-SEH: sra $[[R20]], $[[R20]], 24
; HAS-SEB-SEH: seb $[[R19:[0-9]+]], $[[R17]]
; FIXME: ...Leading to this split check.
; NO-SEB-SEH: xor $[[R21:[0-9]+]], $[[R19]], $[[R20]]
; HAS-SEB-SEH: xor $[[R21:[0-9]+]], $[[R19]], $5
; ALL: sltiu $2, $[[R21]], 1
}
; Check one i16 so that we cover the seh sign extend
@z = common global i16 0, align 1
define signext i16 @AtomicLoadAdd16(i16 signext %incr) nounwind {
entry:
%0 = atomicrmw add i16* @z, i16 %incr monotonic
ret i16 %0
; ALL-LABEL: AtomicLoadAdd16:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(z)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(z)(
; ALL: addiu $[[R1:[0-9]+]], $zero, -4
; ALL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
; ALL: andi $[[R3:[0-9]+]], $[[R0]], 3
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 2
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
; CHECK-EL: sll $[[R5:[0-9]+]], $[[R3]], 3
; ALL: ori $[[R6:[0-9]+]], $zero, 65535
; ALL: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
; ALL: nor $[[R8:[0-9]+]], $zero, $[[R7]]
; ALL: sllv $[[R9:[0-9]+]], $4, $[[R5]]
; O0: $[[BB0:[A-Z_0-9]+]]:
; O0: ld $[[R10:[0-9]+]]
; O0-NEXT: ll $[[R11:[0-9]+]], 0($[[R10]])
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R12:[0-9]+]], 0($[[R2]])
; ALL: addu $[[R13:[0-9]+]], $[[R12]], $[[R9]]
; ALL: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
; ALL: and $[[R15:[0-9]+]], $[[R12]], $[[R8]]
; ALL: or $[[R16:[0-9]+]], $[[R15]], $[[R14]]
; ALL: sc $[[R16]], 0($[[R2]])
; NOT-MICROMIPS: beqz $[[R16]], $[[BB0]]
; MICROMIPS: beqzc $[[R16]], $[[BB0]]
; MIPSR6: beqzc $[[R16]], $[[BB0]]
; ALL: and $[[R17:[0-9]+]], $[[R12]], $[[R7]]
; ALL: srlv $[[R18:[0-9]+]], $[[R17]], $[[R5]]
; NO-SEB-SEH: sll $[[R19:[0-9]+]], $[[R18]], 16
; NO-SEB-SEH: sra $2, $[[R19]], 16
; MIPS32R2: seh $2, $[[R18]]
}
; Test that the i16 return value from cmpxchg is recognised as signed,
; so that setCC doesn't end up comparing an unsigned value to a signed
; value.
; The rest of the functions here are testing the atomic expansion, so
; we just match the end of the function.
define {i16, i1} @foo(i16* %addr, i16 %l, i16 %r, i16 %new) {
%desired = add i16 %l, %r
%res = cmpxchg i16* %addr, i16 %desired, i16 %new seq_cst seq_cst
ret {i16, i1} %res
; ALL-LABEL: foo
; MIPSR6: addu $[[R2:[0-9]+]], $[[R1:[0-9]+]], $[[R0:[0-9]+]]
; NOT-MICROMIPS: addu $[[R2:[0-9]+]], $[[R1:[0-9]+]], $[[R0:[0-9]+]]
; MICROMIPS: addu16 $[[R2:[0-9]+]], $[[R1:[0-9]+]], $[[R0:[0-9]+]]
; ALL: sync
; ALL: andi $[[R3:[0-9]+]], $[[R2]], 65535
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R4:[0-9]+]], 0($[[R5:[0-9]+]])
; ALL: and $[[R6:[0-9]+]], $[[R4]], $
; ALL: and $[[R7:[0-9]+]], $[[R4]], $
; ALL: or $[[R8:[0-9]+]], $[[R7]], $
; ALL: sc $[[R8]], 0($[[R5]])
; NOT-MICROMIPS: beqz $[[R8]], $[[BB0]]
; MICROMIPS: beqzc $[[R8]], $[[BB0]]
; MIPSR6: beqzc $[[R8]], $[[BB0]]
; ALL: srlv $[[R9:[0-9]+]], $[[R6]], $
; NO-SEB-SEH: sll $[[R10:[0-9]+]], $[[R9]], 16
; NO-SEB-SEH: sra $[[R11:[0-9]+]], $[[R10]], 16
; NO-SEB-SEH: sll $[[R12:[0-9]+]], $[[R2]], 16
; NO-SEB-SEH: sra $[[R13:[0-9]+]], $[[R12]], 16
; HAS-SEB-SEH: seh $[[R11:[0-9]+]], $[[R9]]
; HAS-SEB-SEH: seh $[[R13:[0-9]+]], $[[R2]]
; ALL: xor $[[R12:[0-9]+]], $[[R11]], $[[R13]]
; ALL: sltiu $3, $[[R12]], 1
; ALL: sync
}
@countsint = common global i32 0, align 4
define i32 @CheckSync(i32 signext %v) nounwind noinline {
entry:
%0 = atomicrmw add i32* @countsint, i32 %v seq_cst
ret i32 %0
; ALL-LABEL: CheckSync:
; ALL: sync
; ALL: ll
; ALL: sc
; ALL: beq
; ALL: sync
}
; make sure that this assertion in
; TwoAddressInstructionPass::TryInstructionTransform does not fail:
;
; line 1203: assert(TargetRegisterInfo::isVirtualRegister(regB) &&
;
; it failed when MipsDAGToDAGISel::ReplaceUsesWithZeroReg replaced an
; operand of an atomic instruction with register $zero.
@a = external global i32
define i32 @zeroreg() nounwind {
entry:
%pair0 = cmpxchg i32* @a, i32 1, i32 0 seq_cst seq_cst
%0 = extractvalue { i32, i1 } %pair0, 0
%1 = icmp eq i32 %0, 1
%conv = zext i1 %1 to i32
ret i32 %conv
}
; Check that MIPS32R6 has the correct offset range.
; FIXME: At the moment, we don't seem to do addr+offset for any atomic load/store.
define i32 @AtomicLoadAdd32_OffGt9Bit(i32 signext %incr) nounwind {
entry:
%0 = atomicrmw add i32* getelementptr(i32, i32* @x, i32 256), i32 %incr monotonic
ret i32 %0
; ALL-LABEL: AtomicLoadAdd32_OffGt9Bit:
; MIPS32-ANY: lw $[[R0:[0-9]+]], %got(x)
; MIPS64-ANY: ld $[[R0:[0-9]+]], %got_disp(x)(
; ALL: addiu $[[PTR:[0-9]+]], $[[R0]], 1024
; ALL: $[[BB0:[A-Z_0-9]+]]:
; ALL: ll $[[R1:[0-9]+]], 0($[[PTR]])
; ALL: addu $[[R2:[0-9]+]], $[[R1]], $4
; ALL: sc $[[R2]], 0($[[PTR]])
; NOT-MICROMIPS: beqz $[[R2]], $[[BB0]]
; MICROMIPS: beqzc $[[R2]], $[[BB0]]
; MIPSR6: beqzc $[[R2]], $[[BB0]]
}
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