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| author | Chris Lattner <sabre@nondot.org> | 2010-11-06 22:41:18 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-11-06 22:41:18 +0000 |
| commit | 689cf3cb6222652b92fdbd52e96c1d2f421ac44e (patch) | |
| tree | fbb73034b366579d6fb9153bd3b750c04fd5d18c /lib | |
| parent | e717610f53e0465cde198536561a3c00ce29d59f (diff) | |
| download | external_llvm-689cf3cb6222652b92fdbd52e96c1d2f421ac44e.tar.gz external_llvm-689cf3cb6222652b92fdbd52e96c1d2f421ac44e.tar.bz2 external_llvm-689cf3cb6222652b92fdbd52e96c1d2f421ac44e.zip | |
implement aliases for div/idiv that have an explicit A register operand,
implementing rdar://8431864
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@118364 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.td | 20 |
1 files changed, 20 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)>; |