mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-02 22:04:55 +00:00
8f2a85e099
This commit adds a weak variant of the cmpxchg operation, as described
in C++11. A cmpxchg instruction with this modifier is permitted to
fail to store, even if the comparison indicated it should.
As a result, cmpxchg instructions must return a flag indicating
success in addition to their original iN value loaded. Thus, for
uniformity *all* cmpxchg instructions now return "{ iN, i1 }". The
second flag is 1 when the store succeeded.
At the DAG level, a new ATOMIC_CMP_SWAP_WITH_SUCCESS node has been
added as the natural representation for the new cmpxchg instructions.
It is a strong cmpxchg.
By default this gets Expanded to the existing ATOMIC_CMP_SWAP during
Legalization, so existing backends should see no change in behaviour.
If they wish to deal with the enhanced node instead, they can call
setOperationAction on it. Beware: as a node with 2 results, it cannot
be selected from TableGen.
Currently, no use is made of the extra information provided in this
patch. Test updates are almost entirely adapting the input IR to the
new scheme.
Summary for out of tree users:
------------------------------
+ Legacy Bitcode files are upgraded during read.
+ Legacy assembly IR files will be invalid.
+ Front-ends must adapt to different type for "cmpxchg".
+ Backends should be unaffected by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210903 91177308-0d34-0410-b5e6-96231b3b80d8
440 lines
16 KiB
LLVM
440 lines
16 KiB
LLVM
; RUN: llc -march=mipsel --disable-machine-licm < %s | FileCheck %s -check-prefix=CHECK-EL
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; RUN: llc -march=mips --disable-machine-licm < %s | FileCheck %s -check-prefix=CHECK-EB
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@x = common global i32 0, align 4
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define i32 @AtomicLoadAdd32(i32 %incr) nounwind {
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entry:
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%0 = atomicrmw add i32* @x, i32 %incr monotonic
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ret i32 %0
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; CHECK-EL-LABEL: AtomicLoadAdd32:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R1:[0-9]+]], 0($[[R0]])
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; CHECK-EL: addu $[[R2:[0-9]+]], $[[R1]], $4
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; CHECK-EL: sc $[[R2]], 0($[[R0]])
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; CHECK-EL: beqz $[[R2]], $[[BB0]]
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; CHECK-EB-LABEL: AtomicLoadAdd32:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $[[R1:[0-9]+]], 0($[[R0]])
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; CHECK-EB: addu $[[R2:[0-9]+]], $[[R1]], $4
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; CHECK-EB: sc $[[R2]], 0($[[R0]])
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; CHECK-EB: beqz $[[R2]], $[[BB0]]
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}
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define i32 @AtomicLoadNand32(i32 %incr) nounwind {
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entry:
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%0 = atomicrmw nand i32* @x, i32 %incr monotonic
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ret i32 %0
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; CHECK-EL-LABEL: AtomicLoadNand32:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R1:[0-9]+]], 0($[[R0]])
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; CHECK-EL: and $[[R3:[0-9]+]], $[[R1]], $4
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; CHECK-EL: nor $[[R2:[0-9]+]], $zero, $[[R3]]
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; CHECK-EL: sc $[[R2]], 0($[[R0]])
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; CHECK-EL: beqz $[[R2]], $[[BB0]]
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; CHECK-EB-LABEL: AtomicLoadNand32:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $[[R1:[0-9]+]], 0($[[R0]])
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; CHECK-EB: and $[[R3:[0-9]+]], $[[R1]], $4
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; CHECK-EB: nor $[[R2:[0-9]+]], $zero, $[[R3]]
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; CHECK-EB: sc $[[R2]], 0($[[R0]])
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; CHECK-EB: beqz $[[R2]], $[[BB0]]
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}
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define i32 @AtomicSwap32(i32 %newval) nounwind {
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entry:
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%newval.addr = alloca i32, align 4
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store i32 %newval, i32* %newval.addr, align 4
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%tmp = load i32* %newval.addr, align 4
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%0 = atomicrmw xchg i32* @x, i32 %tmp monotonic
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ret i32 %0
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; CHECK-EL-LABEL: AtomicSwap32:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll ${{[0-9]+}}, 0($[[R0]])
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; CHECK-EL: sc $[[R2:[0-9]+]], 0($[[R0]])
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; CHECK-EL: beqz $[[R2]], $[[BB0]]
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; CHECK-EB-LABEL: AtomicSwap32:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll ${{[0-9]+}}, 0($[[R0]])
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; CHECK-EB: sc $[[R2:[0-9]+]], 0($[[R0]])
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; CHECK-EB: beqz $[[R2]], $[[BB0]]
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}
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define i32 @AtomicCmpSwap32(i32 %oldval, i32 %newval) nounwind {
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entry:
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%newval.addr = alloca i32, align 4
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store i32 %newval, i32* %newval.addr, align 4
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%tmp = load i32* %newval.addr, align 4
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%0 = cmpxchg i32* @x, i32 %oldval, i32 %tmp monotonic monotonic
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%1 = extractvalue { i32, i1 } %0, 0
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ret i32 %1
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; CHECK-EL-LABEL: AtomicCmpSwap32:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $2, 0($[[R0]])
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; CHECK-EL: bne $2, $4, $[[BB1:[A-Z_0-9]+]]
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; CHECK-EL: sc $[[R2:[0-9]+]], 0($[[R0]])
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; CHECK-EL: beqz $[[R2]], $[[BB0]]
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; CHECK-EL: $[[BB1]]:
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; CHECK-EB-LABEL: AtomicCmpSwap32:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(x)
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $2, 0($[[R0]])
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; CHECK-EB: bne $2, $4, $[[BB1:[A-Z_0-9]+]]
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; CHECK-EB: sc $[[R2:[0-9]+]], 0($[[R0]])
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; CHECK-EB: beqz $[[R2]], $[[BB0]]
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; CHECK-EB: $[[BB1]]:
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}
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@y = common global i8 0, align 1
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define signext i8 @AtomicLoadAdd8(i8 signext %incr) nounwind {
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entry:
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%0 = atomicrmw add i8* @y, i8 %incr monotonic
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ret i8 %0
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; CHECK-EL-LABEL: AtomicLoadAdd8:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EL: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EL: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EL: sll $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EL: ori $[[R5:[0-9]+]], $zero, 255
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; CHECK-EL: sllv $[[R6:[0-9]+]], $[[R5]], $[[R4]]
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; CHECK-EL: nor $[[R7:[0-9]+]], $zero, $[[R6]]
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; CHECK-EL: sllv $[[R9:[0-9]+]], $4, $[[R4]]
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EL: addu $[[R11:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EL: and $[[R12:[0-9]+]], $[[R11]], $[[R6]]
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; CHECK-EL: and $[[R13:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EL: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EL: sc $[[R14]], 0($[[R2]])
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; CHECK-EL: beqz $[[R14]], $[[BB0]]
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; CHECK-EL: and $[[R15:[0-9]+]], $[[R10]], $[[R6]]
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; CHECK-EL: srlv $[[R16:[0-9]+]], $[[R15]], $[[R4]]
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; CHECK-EL: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EL: sra $2, $[[R17]], 24
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; CHECK-EB-LABEL: AtomicLoadAdd8:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EB: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EB: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EB: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
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; CHECK-EB: ori $[[R6:[0-9]+]], $zero, 255
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; CHECK-EB: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
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; CHECK-EB: nor $[[R8:[0-9]+]], $zero, $[[R7]]
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; CHECK-EB: sllv $[[R9:[0-9]+]], $4, $[[R5]]
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EB: addu $[[R11:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EB: and $[[R12:[0-9]+]], $[[R11]], $[[R7]]
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; CHECK-EB: and $[[R13:[0-9]+]], $[[R10]], $[[R8]]
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; CHECK-EB: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EB: sc $[[R14]], 0($[[R2]])
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; CHECK-EB: beqz $[[R14]], $[[BB0]]
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; CHECK-EB: and $[[R15:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EB: srlv $[[R16:[0-9]+]], $[[R15]], $[[R5]]
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; CHECK-EB: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EB: sra $2, $[[R17]], 24
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}
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define signext i8 @AtomicLoadSub8(i8 signext %incr) nounwind {
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entry:
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%0 = atomicrmw sub i8* @y, i8 %incr monotonic
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ret i8 %0
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; CHECK-EL-LABEL: AtomicLoadSub8:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EL: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EL: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EL: sll $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EL: ori $[[R5:[0-9]+]], $zero, 255
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; CHECK-EL: sllv $[[R6:[0-9]+]], $[[R5]], $[[R4]]
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; CHECK-EL: nor $[[R7:[0-9]+]], $zero, $[[R6]]
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; CHECK-EL: sllv $[[R9:[0-9]+]], $4, $[[R4]]
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EL: subu $[[R11:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EL: and $[[R12:[0-9]+]], $[[R11]], $[[R6]]
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; CHECK-EL: and $[[R13:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EL: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EL: sc $[[R14]], 0($[[R2]])
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; CHECK-EL: beqz $[[R14]], $[[BB0]]
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; CHECK-EL: and $[[R15:[0-9]+]], $[[R10]], $[[R6]]
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; CHECK-EL: srlv $[[R16:[0-9]+]], $[[R15]], $[[R4]]
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; CHECK-EL: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EL: sra $2, $[[R17]], 24
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; CHECK-EB-LABEL: AtomicLoadSub8:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EB: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EB: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EB: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
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; CHECK-EB: ori $[[R6:[0-9]+]], $zero, 255
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; CHECK-EB: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
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; CHECK-EB: nor $[[R8:[0-9]+]], $zero, $[[R7]]
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; CHECK-EB: sllv $[[R9:[0-9]+]], $4, $[[R5]]
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EB: subu $[[R11:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EB: and $[[R12:[0-9]+]], $[[R11]], $[[R7]]
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; CHECK-EB: and $[[R13:[0-9]+]], $[[R10]], $[[R8]]
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; CHECK-EB: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EB: sc $[[R14]], 0($[[R2]])
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; CHECK-EB: beqz $[[R14]], $[[BB0]]
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; CHECK-EB: and $[[R15:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EB: srlv $[[R16:[0-9]+]], $[[R15]], $[[R5]]
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; CHECK-EB: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EB: sra $2, $[[R17]], 24
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}
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define signext i8 @AtomicLoadNand8(i8 signext %incr) nounwind {
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entry:
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%0 = atomicrmw nand i8* @y, i8 %incr monotonic
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ret i8 %0
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; CHECK-EL-LABEL: AtomicLoadNand8:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EL: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EL: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EL: sll $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EL: ori $[[R5:[0-9]+]], $zero, 255
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; CHECK-EL: sllv $[[R6:[0-9]+]], $[[R5]], $[[R4]]
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; CHECK-EL: nor $[[R7:[0-9]+]], $zero, $[[R6]]
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; CHECK-EL: sllv $[[R9:[0-9]+]], $4, $[[R4]]
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EL: and $[[R18:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EL: nor $[[R11:[0-9]+]], $zero, $[[R18]]
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; CHECK-EL: and $[[R12:[0-9]+]], $[[R11]], $[[R6]]
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; CHECK-EL: and $[[R13:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EL: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EL: sc $[[R14]], 0($[[R2]])
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; CHECK-EL: beqz $[[R14]], $[[BB0]]
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; CHECK-EL: and $[[R15:[0-9]+]], $[[R10]], $[[R6]]
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; CHECK-EL: srlv $[[R16:[0-9]+]], $[[R15]], $[[R4]]
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; CHECK-EL: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EL: sra $2, $[[R17]], 24
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; CHECK-EB-LABEL: AtomicLoadNand8:
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; CHECK-EB: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EB: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EB: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EB: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
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; CHECK-EB: ori $[[R6:[0-9]+]], $zero, 255
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; CHECK-EB: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
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; CHECK-EB: nor $[[R8:[0-9]+]], $zero, $[[R7]]
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; CHECK-EB: sllv $[[R9:[0-9]+]], $4, $[[R5]]
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; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EB: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EB: and $[[R18:[0-9]+]], $[[R10]], $[[R9]]
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; CHECK-EB: nor $[[R11:[0-9]+]], $zero, $[[R18]]
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; CHECK-EB: and $[[R12:[0-9]+]], $[[R11]], $[[R7]]
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; CHECK-EB: and $[[R13:[0-9]+]], $[[R10]], $[[R8]]
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; CHECK-EB: or $[[R14:[0-9]+]], $[[R13]], $[[R12]]
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; CHECK-EB: sc $[[R14]], 0($[[R2]])
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; CHECK-EB: beqz $[[R14]], $[[BB0]]
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; CHECK-EB: and $[[R15:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EB: srlv $[[R16:[0-9]+]], $[[R15]], $[[R5]]
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; CHECK-EB: sll $[[R17:[0-9]+]], $[[R16]], 24
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; CHECK-EB: sra $2, $[[R17]], 24
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}
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define signext i8 @AtomicSwap8(i8 signext %newval) nounwind {
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entry:
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%0 = atomicrmw xchg i8* @y, i8 %newval monotonic
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ret i8 %0
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; CHECK-EL-LABEL: AtomicSwap8:
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; CHECK-EL: lw $[[R0:[0-9]+]], %got(y)
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; CHECK-EL: addiu $[[R1:[0-9]+]], $zero, -4
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; CHECK-EL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
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; CHECK-EL: andi $[[R3:[0-9]+]], $[[R0]], 3
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; CHECK-EL: sll $[[R4:[0-9]+]], $[[R3]], 3
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; CHECK-EL: ori $[[R5:[0-9]+]], $zero, 255
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; CHECK-EL: sllv $[[R6:[0-9]+]], $[[R5]], $[[R4]]
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; CHECK-EL: nor $[[R7:[0-9]+]], $zero, $[[R6]]
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; CHECK-EL: sllv $[[R9:[0-9]+]], $4, $[[R4]]
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; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
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; CHECK-EL: ll $[[R10:[0-9]+]], 0($[[R2]])
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; CHECK-EL: and $[[R18:[0-9]+]], $[[R9]], $[[R6]]
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; CHECK-EL: and $[[R13:[0-9]+]], $[[R10]], $[[R7]]
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; CHECK-EL: or $[[R14:[0-9]+]], $[[R13]], $[[R18]]
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; CHECK-EL: sc $[[R14]], 0($[[R2]])
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; CHECK-EL: beqz $[[R14]], $[[BB0]]
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; CHECK-EL: and $[[R15:[0-9]+]], $[[R10]], $[[R6]]
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; CHECK-EL: srlv $[[R16:[0-9]+]], $[[R15]], $[[R4]]
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; CHECK-EL: sll $[[R17:[0-9]+]], $[[R16]], 24
|
|
; CHECK-EL: sra $2, $[[R17]], 24
|
|
|
|
; CHECK-EB-LABEL: AtomicSwap8:
|
|
; CHECK-EB: lw $[[R0:[0-9]+]], %got(y)
|
|
; CHECK-EB: addiu $[[R1:[0-9]+]], $zero, -4
|
|
; CHECK-EB: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
|
|
; CHECK-EB: andi $[[R3:[0-9]+]], $[[R0]], 3
|
|
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
|
|
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
|
|
; CHECK-EB: ori $[[R6:[0-9]+]], $zero, 255
|
|
; CHECK-EB: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
|
|
; CHECK-EB: nor $[[R8:[0-9]+]], $zero, $[[R7]]
|
|
; CHECK-EB: sllv $[[R9:[0-9]+]], $4, $[[R5]]
|
|
|
|
; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
|
|
; CHECK-EB: ll $[[R10:[0-9]+]], 0($[[R2]])
|
|
; CHECK-EB: and $[[R18:[0-9]+]], $[[R9]], $[[R7]]
|
|
; CHECK-EB: and $[[R13:[0-9]+]], $[[R10]], $[[R8]]
|
|
; CHECK-EB: or $[[R14:[0-9]+]], $[[R13]], $[[R18]]
|
|
; CHECK-EB: sc $[[R14]], 0($[[R2]])
|
|
; CHECK-EB: beqz $[[R14]], $[[BB0]]
|
|
|
|
; CHECK-EB: and $[[R15:[0-9]+]], $[[R10]], $[[R7]]
|
|
; CHECK-EB: srlv $[[R16:[0-9]+]], $[[R15]], $[[R5]]
|
|
; CHECK-EB: sll $[[R17:[0-9]+]], $[[R16]], 24
|
|
; CHECK-EB: sra $2, $[[R17]], 24
|
|
}
|
|
|
|
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
|
|
|
|
; CHECK-EL-LABEL: AtomicCmpSwap8:
|
|
; CHECK-EL: lw $[[R0:[0-9]+]], %got(y)
|
|
; CHECK-EL: addiu $[[R1:[0-9]+]], $zero, -4
|
|
; CHECK-EL: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
|
|
; CHECK-EL: andi $[[R3:[0-9]+]], $[[R0]], 3
|
|
; CHECK-EL: sll $[[R4:[0-9]+]], $[[R3]], 3
|
|
; CHECK-EL: ori $[[R5:[0-9]+]], $zero, 255
|
|
; CHECK-EL: sllv $[[R6:[0-9]+]], $[[R5]], $[[R4]]
|
|
; CHECK-EL: nor $[[R7:[0-9]+]], $zero, $[[R6]]
|
|
; CHECK-EL: andi $[[R8:[0-9]+]], $4, 255
|
|
; CHECK-EL: sllv $[[R9:[0-9]+]], $[[R8]], $[[R4]]
|
|
; CHECK-EL: andi $[[R10:[0-9]+]], $5, 255
|
|
; CHECK-EL: sllv $[[R11:[0-9]+]], $[[R10]], $[[R4]]
|
|
|
|
; CHECK-EL: $[[BB0:[A-Z_0-9]+]]:
|
|
; CHECK-EL: ll $[[R12:[0-9]+]], 0($[[R2]])
|
|
; CHECK-EL: and $[[R13:[0-9]+]], $[[R12]], $[[R6]]
|
|
; CHECK-EL: bne $[[R13]], $[[R9]], $[[BB1:[A-Z_0-9]+]]
|
|
|
|
; CHECK-EL: and $[[R14:[0-9]+]], $[[R12]], $[[R7]]
|
|
; CHECK-EL: or $[[R15:[0-9]+]], $[[R14]], $[[R11]]
|
|
; CHECK-EL: sc $[[R15]], 0($[[R2]])
|
|
; CHECK-EL: beqz $[[R15]], $[[BB0]]
|
|
|
|
; CHECK-EL: $[[BB1]]:
|
|
; CHECK-EL: srlv $[[R16:[0-9]+]], $[[R13]], $[[R4]]
|
|
; CHECK-EL: sll $[[R17:[0-9]+]], $[[R16]], 24
|
|
; CHECK-EL: sra $2, $[[R17]], 24
|
|
|
|
; CHECK-EB-LABEL: AtomicCmpSwap8:
|
|
; CHECK-EB: lw $[[R0:[0-9]+]], %got(y)
|
|
; CHECK-EB: addiu $[[R1:[0-9]+]], $zero, -4
|
|
; CHECK-EB: and $[[R2:[0-9]+]], $[[R0]], $[[R1]]
|
|
; CHECK-EB: andi $[[R3:[0-9]+]], $[[R0]], 3
|
|
; CHECK-EB: xori $[[R4:[0-9]+]], $[[R3]], 3
|
|
; CHECK-EB: sll $[[R5:[0-9]+]], $[[R4]], 3
|
|
; CHECK-EB: ori $[[R6:[0-9]+]], $zero, 255
|
|
; CHECK-EB: sllv $[[R7:[0-9]+]], $[[R6]], $[[R5]]
|
|
; CHECK-EB: nor $[[R8:[0-9]+]], $zero, $[[R7]]
|
|
; CHECK-EB: andi $[[R9:[0-9]+]], $4, 255
|
|
; CHECK-EB: sllv $[[R10:[0-9]+]], $[[R9]], $[[R5]]
|
|
; CHECK-EB: andi $[[R11:[0-9]+]], $5, 255
|
|
; CHECK-EB: sllv $[[R12:[0-9]+]], $[[R11]], $[[R5]]
|
|
|
|
; CHECK-EB: $[[BB0:[A-Z_0-9]+]]:
|
|
; CHECK-EB: ll $[[R13:[0-9]+]], 0($[[R2]])
|
|
; CHECK-EB: and $[[R14:[0-9]+]], $[[R13]], $[[R7]]
|
|
; CHECK-EB: bne $[[R14]], $[[R10]], $[[BB1:[A-Z_0-9]+]]
|
|
|
|
; CHECK-EB: and $[[R15:[0-9]+]], $[[R13]], $[[R8]]
|
|
; CHECK-EB: or $[[R16:[0-9]+]], $[[R15]], $[[R12]]
|
|
; CHECK-EB: sc $[[R16]], 0($[[R2]])
|
|
; CHECK-EB: beqz $[[R16]], $[[BB0]]
|
|
|
|
; CHECK-EB: $[[BB1]]:
|
|
; CHECK-EB: srlv $[[R17:[0-9]+]], $[[R14]], $[[R5]]
|
|
; CHECK-EB: sll $[[R18:[0-9]+]], $[[R17]], 24
|
|
; CHECK-EB: sra $2, $[[R18]], 24
|
|
}
|
|
|
|
@countsint = common global i32 0, align 4
|
|
|
|
define i32 @CheckSync(i32 %v) nounwind noinline {
|
|
entry:
|
|
%0 = atomicrmw add i32* @countsint, i32 %v seq_cst
|
|
ret i32 %0
|
|
|
|
; CHECK-EL-LABEL: CheckSync:
|
|
; CHECK-EL: sync 0
|
|
; CHECK-EL: ll
|
|
; CHECK-EL: sc
|
|
; CHECK-EL: beq
|
|
; CHECK-EL: sync 0
|
|
|
|
; CHECK-EB-LABEL: CheckSync:
|
|
; CHECK-EB: sync 0
|
|
; CHECK-EB: ll
|
|
; CHECK-EB: sc
|
|
; CHECK-EB: beq
|
|
; CHECK-EB: sync 0
|
|
}
|
|
|
|
; 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
|
|
}
|