From: Richard Sandiford Date: Mon, 5 Aug 2013 11:07:38 +0000 (+0000) Subject: [SystemZ] Add definitions for BRCT and BRCTG X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ccdf5cc7bc443726425dd1ad498d44768332d49c;p=oota-llvm.git [SystemZ] Add definitions for BRCT and BRCTG git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187721 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Target/SystemZ/SystemZInstrFormats.td b/lib/Target/SystemZ/SystemZInstrFormats.td index 98837149030..534ed88652f 100644 --- a/lib/Target/SystemZ/SystemZInstrFormats.td +++ b/lib/Target/SystemZ/SystemZInstrFormats.td @@ -489,6 +489,12 @@ class InstSS op, dag outs, dag ins, string asmstr, list pattern> // Inherent: // One register output operand and no input operands. // +// BranchUnary: +// One register output operand, one register input operand and +// one branch displacement. The instructions stores a modified +// form of the source register in the destination register and +// branches on the result. +// // Store: // One register or immediate input operand and one address input operand. // The instruction stores the first operand to the address. @@ -555,6 +561,15 @@ class InherentRRE opcode, RegisterOperand cls, let R2 = 0; } +class BranchUnaryRI opcode, RegisterOperand cls> + : InstRI { + let isBranch = 1; + let isTerminator = 1; + let Constraints = "$R1 = $R1src"; + let DisableEncoding = "$R1src"; +} + class LoadMultipleRSY opcode, RegisterOperand cls> : InstRSY { diff --git a/lib/Target/SystemZ/SystemZInstrInfo.td b/lib/Target/SystemZ/SystemZInstrInfo.td index 58fb662efdd..73a6126f032 100644 --- a/lib/Target/SystemZ/SystemZInstrInfo.td +++ b/lib/Target/SystemZ/SystemZInstrInfo.td @@ -166,6 +166,13 @@ defm AsmJE : IntCondExtendedMnemonic<8, "e", "nlh">; defm AsmJHE : IntCondExtendedMnemonic<10, "he", "nl">; defm AsmJLE : IntCondExtendedMnemonic<12, "le", "nh">; +// Decrement a register and branch if it is nonzero. These don't clobber CC, +// but we might need to split long branches into sequences that do. +let Defs = [CC] in { + def BRCT : BranchUnaryRI<"brct", 0xA76, GR32>; + def BRCTG : BranchUnaryRI<"brctg", 0xA77, GR64>; +} + //===----------------------------------------------------------------------===// // Select instructions //===----------------------------------------------------------------------===// diff --git a/test/MC/Disassembler/SystemZ/insns-pcrel.txt b/test/MC/Disassembler/SystemZ/insns-pcrel.txt index f9e7774cbdd..c565b6e47b1 100644 --- a/test/MC/Disassembler/SystemZ/insns-pcrel.txt +++ b/test/MC/Disassembler/SystemZ/insns-pcrel.txt @@ -1298,3 +1298,35 @@ # 0x0000075a: # CHECK: cij %r0, 0, 15, 0x75a 0xec 0x0f 0x00 0x00 0x00 0x7e + +# 0x00000760: +# CHECK: brct %r0, 0x760 +0xa7 0x06 0x00 0x00 + +# 0x00000764: +# CHECK: brct %r1, 0x762 +0xa7 0x16 0xff 0xff + +# 0x00000768: +# CHECK: brct %r9, 0xffffffffffff0768 +0xa7 0x96 0x80 0x00 + +# 0x0000076c: +# CHECK: brct %r15, 0x1076a +0xa7 0xf6 0x7f 0xff + +# 0x00000770: +# CHECK: brctg %r0, 0x770 +0xa7 0x07 0x00 0x00 + +# 0x00000774: +# CHECK: brctg %r1, 0x772 +0xa7 0x17 0xff 0xff + +# 0x00000778: +# CHECK: brctg %r9, 0xffffffffffff0778 +0xa7 0x97 0x80 0x00 + +# 0x0000077c: +# CHECK: brctg %r15, 0x1077a +0xa7 0xf7 0x7f 0xff diff --git a/test/MC/SystemZ/insn-bad.s b/test/MC/SystemZ/insn-bad.s index a3218edb941..246f5ce661a 100644 --- a/test/MC/SystemZ/insn-bad.s +++ b/test/MC/SystemZ/insn-bad.s @@ -329,6 +329,34 @@ brcl -1, bar brcl 16, bar +#CHECK: error: offset out of range +#CHECK: brct %r0, -0x100002 +#CHECK: error: offset out of range +#CHECK: brct %r0, -1 +#CHECK: error: offset out of range +#CHECK: brct %r0, 1 +#CHECK: error: offset out of range +#CHECK: brct %r0, 0x10000 + + brct %r0, -0x100002 + brct %r0, -1 + brct %r0, 1 + brct %r0, 0x10000 + +#CHECK: error: offset out of range +#CHECK: brctg %r0, -0x100002 +#CHECK: error: offset out of range +#CHECK: brctg %r0, -1 +#CHECK: error: offset out of range +#CHECK: brctg %r0, 1 +#CHECK: error: offset out of range +#CHECK: brctg %r0, 0x10000 + + brctg %r0, -0x100002 + brctg %r0, -1 + brctg %r0, 1 + brctg %r0, 0x10000 + #CHECK: error: invalid operand #CHECK: c %r0, -1 #CHECK: error: invalid operand diff --git a/test/MC/SystemZ/insn-good.s b/test/MC/SystemZ/insn-good.s index 5ddae83a7a7..7686238da43 100644 --- a/test/MC/SystemZ/insn-good.s +++ b/test/MC/SystemZ/insn-good.s @@ -1122,6 +1122,38 @@ #CHECK: fixup A - offset: 2, value: bar@PLT+2, kind: FK_390_PC32DBL jg bar@PLT +#CHECK: brct %r0, .[[LAB:L.*]]-65536 # encoding: [0xa7,0x06,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]-65536)+2, kind: FK_390_PC16DBL + brct %r0, -0x10000 +#CHECK: brct %r0, .[[LAB:L.*]]-2 # encoding: [0xa7,0x06,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]-2)+2, kind: FK_390_PC16DBL + brct %r0, -2 +#CHECK: brct %r0, .[[LAB:L.*]] # encoding: [0xa7,0x06,A,A] +#CHECK: fixup A - offset: 2, value: .[[LAB]]+2, kind: FK_390_PC16DBL + brct %r0, 0 +#CHECK: brct %r0, .[[LAB:L.*]]+65534 # encoding: [0xa7,0x06,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]+65534)+2, kind: FK_390_PC16DBL + brct %r0, 0xfffe +#CHECK: brct %r15, .[[LAB:L.*]] # encoding: [0xa7,0xf6,A,A] +#CHECK: fixup A - offset: 2, value: .[[LAB]]+2, kind: FK_390_PC16DBL + brct %r15, 0 + +#CHECK: brctg %r0, .[[LAB:L.*]]-65536 # encoding: [0xa7,0x07,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]-65536)+2, kind: FK_390_PC16DBL + brctg %r0, -0x10000 +#CHECK: brctg %r0, .[[LAB:L.*]]-2 # encoding: [0xa7,0x07,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]-2)+2, kind: FK_390_PC16DBL + brctg %r0, -2 +#CHECK: brctg %r0, .[[LAB:L.*]] # encoding: [0xa7,0x07,A,A] +#CHECK: fixup A - offset: 2, value: .[[LAB]]+2, kind: FK_390_PC16DBL + brctg %r0, 0 +#CHECK: brctg %r0, .[[LAB:L.*]]+65534 # encoding: [0xa7,0x07,A,A] +#CHECK: fixup A - offset: 2, value: (.[[LAB]]+65534)+2, kind: FK_390_PC16DBL + brctg %r0, 0xfffe +#CHECK: brctg %r15, .[[LAB:L.*]] # encoding: [0xa7,0xf7,A,A] +#CHECK: fixup A - offset: 2, value: .[[LAB]]+2, kind: FK_390_PC16DBL + brctg %r15, 0 + #CHECK: c %r0, 0 # encoding: [0x59,0x00,0x00,0x00] #CHECK: c %r0, 4095 # encoding: [0x59,0x00,0x0f,0xff] #CHECK: c %r0, 0(%r1) # encoding: [0x59,0x00,0x10,0x00]