diff options
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 20 | ||||
| -rw-r--r-- | test/MC/X86/x86-64.s | 17 |
2 files changed, 37 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td index bd0e86f941..148264d4dc 100644 --- a/lib/Target/X86/X86InstrInfo.td +++ b/lib/Target/X86/X86InstrInfo.td @@ -1377,6 +1377,26 @@ def : InstAlias<"clrw $reg", (XOR16rr GR16:$reg, GR16:$reg)>; def : InstAlias<"clrl $reg", (XOR32rr GR32:$reg, GR32:$reg)>; def : InstAlias<"clrq $reg", (XOR64rr GR64:$reg, GR64:$reg)>; +// div and idiv aliases for explicit A register. +def : InstAlias<"divb $src, %al", (DIV8r GR8 :$src)>; +def : InstAlias<"divw $src, %ax", (DIV16r GR16:$src)>; +def : InstAlias<"divl $src, %eax", (DIV32r GR32:$src)>; +def : InstAlias<"divq $src, %rax", (DIV64r GR64:$src)>; +def : InstAlias<"divb $src, %al", (DIV8m i8mem :$src)>; +def : InstAlias<"divw $src, %ax", (DIV16m i16mem:$src)>; +def : InstAlias<"divl $src, %eax", (DIV32m i32mem:$src)>; +def : InstAlias<"divq $src, %rax", (DIV64m i64mem:$src)>; +def : InstAlias<"idivb $src, %al", (IDIV8r GR8 :$src)>; +def : InstAlias<"idivw $src, %ax", (IDIV16r GR16:$src)>; +def : InstAlias<"idivl $src, %eax", (IDIV32r GR32:$src)>; +def : InstAlias<"idivq $src, %rax", (IDIV64r GR64:$src)>; +def : InstAlias<"idivb $src, %al", (IDIV8m i8mem :$src)>; +def : InstAlias<"idivw $src, %ax", (IDIV16m i16mem:$src)>; +def : InstAlias<"idivl $src, %eax", (IDIV32m i32mem:$src)>; +def : InstAlias<"idivq $src, %rax", (IDIV64m i64mem:$src)>; + + + // Various unary fpstack operations default to operating on on ST1. // For example, "fxch" -> "fxch %st(1)" def : InstAlias<"faddp", (ADD_FPrST0 ST1)>; diff --git a/test/MC/X86/x86-64.s b/test/MC/X86/x86-64.s index 6a24e39219..93e90669c8 100644 --- a/test/MC/X86/x86-64.s +++ b/test/MC/X86/x86-64.s @@ -880,3 +880,20 @@ mov (%rsi), %gs // CHECK: movl (%rsi), %gs # encoding: [0x8e,0x2e] mov %gs, (%rsi) // CHECK: movl %gs, (%rsi) # encoding: [0x8c,0x2e] +// rdar://8431864 + div %bl,%al + div %bx,%ax + div %ecx,%eax + div 0xdeadbeef(%ebx,%ecx,8),%eax + div 0x45,%eax + div 0x7eed,%eax + div 0xbabecafe,%eax + div 0x12345678,%eax + idiv %bl,%al + idiv %bx,%ax + idiv %ecx,%eax + idiv 0xdeadbeef(%ebx,%ecx,8),%eax + idiv 0x45,%eax + idiv 0x7eed,%eax + idiv 0xbabecafe,%eax + idiv 0x12345678,%eax |