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Make aliases for shld and shrd match gas. PR12173.

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llvm-svn: 152014
This commit is contained in:
Eli Friedman 2012-03-05 04:31:54 +00:00
parent 2a1b1c68f3
commit a5a6d6aa8f
2 changed files with 24 additions and 19 deletions
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26
llvm/lib/Target/X86/X86InstrInfo.td
View File

@ -1855,20 +1855,20 @@ def : InstAlias<"outl $port", (OUT32ir i8imm:$port)>;
// errors, since its encoding is the most compact.
def : InstAlias<"sldt $mem", (SLDT16m i16mem:$mem)>;
// shld/shrd op,op -> shld op, op, 1
def : InstAlias<"shldw $r1, $r2", (SHLD16rri8 GR16:$r1, GR16:$r2, 1)>;
def : InstAlias<"shldl $r1, $r2", (SHLD32rri8 GR32:$r1, GR32:$r2, 1)>;
def : InstAlias<"shldq $r1, $r2", (SHLD64rri8 GR64:$r1, GR64:$r2, 1)>;
def : InstAlias<"shrdw $r1, $r2", (SHRD16rri8 GR16:$r1, GR16:$r2, 1)>;
def : InstAlias<"shrdl $r1, $r2", (SHRD32rri8 GR32:$r1, GR32:$r2, 1)>;
def : InstAlias<"shrdq $r1, $r2", (SHRD64rri8 GR64:$r1, GR64:$r2, 1)>;
// shld/shrd op,op -> shld op, op, CL
def : InstAlias<"shldw $r1, $r2", (SHLD16rrCL GR16:$r1, GR16:$r2)>;
def : InstAlias<"shldl $r1, $r2", (SHLD32rrCL GR32:$r1, GR32:$r2)>;
def : InstAlias<"shldq $r1, $r2", (SHLD64rrCL GR64:$r1, GR64:$r2)>;
def : InstAlias<"shrdw $r1, $r2", (SHRD16rrCL GR16:$r1, GR16:$r2)>;
def : InstAlias<"shrdl $r1, $r2", (SHRD32rrCL GR32:$r1, GR32:$r2)>;
def : InstAlias<"shrdq $r1, $r2", (SHRD64rrCL GR64:$r1, GR64:$r2)>;
def : InstAlias<"shldw $mem, $reg", (SHLD16mri8 i16mem:$mem, GR16:$reg, 1)>;
def : InstAlias<"shldl $mem, $reg", (SHLD32mri8 i32mem:$mem, GR32:$reg, 1)>;
def : InstAlias<"shldq $mem, $reg", (SHLD64mri8 i64mem:$mem, GR64:$reg, 1)>;
def : InstAlias<"shrdw $mem, $reg", (SHRD16mri8 i16mem:$mem, GR16:$reg, 1)>;
def : InstAlias<"shrdl $mem, $reg", (SHRD32mri8 i32mem:$mem, GR32:$reg, 1)>;
def : InstAlias<"shrdq $mem, $reg", (SHRD64mri8 i64mem:$mem, GR64:$reg, 1)>;
def : InstAlias<"shldw $mem, $reg", (SHLD16mrCL i16mem:$mem, GR16:$reg)>;
def : InstAlias<"shldl $mem, $reg", (SHLD32mrCL i32mem:$mem, GR32:$reg)>;
def : InstAlias<"shldq $mem, $reg", (SHLD64mrCL i64mem:$mem, GR64:$reg)>;
def : InstAlias<"shrdw $mem, $reg", (SHRD16mrCL i16mem:$mem, GR16:$reg)>;
def : InstAlias<"shrdl $mem, $reg", (SHRD32mrCL i32mem:$mem, GR32:$reg)>;
def : InstAlias<"shrdq $mem, $reg", (SHRD64mrCL i64mem:$mem, GR64:$reg)>;
/* FIXME: This is disabled because the asm matcher is currently incapable of
* matching a fixed immediate like $1.

17
llvm/test/MC/X86/x86-64.s
View File

@ -339,15 +339,20 @@ rclb $1, %bl // CHECK: rclb %bl # encoding: [0xd0,0xd3]
rclb $2, %bl // CHECK: rclb $2, %bl # encoding: [0xc0,0xd3,0x02]
// rdar://8418316
// PR12173
// CHECK: shldw %cl, %bx, %bx
// CHECK: shldw %cl, %bx, %bx
// CHECK: shldw $1, %bx, %bx
// CHECK: shldw $1, %bx, %bx
// CHECK: shrdw $1, %bx, %bx
// CHECK: shrdw %cl, %bx, %bx
// CHECK: shrdw %cl, %bx, %bx
// CHECK: shrdw $1, %bx, %bx
shld %bx,%bx
shld $1, %bx,%bx
shrd %bx,%bx
shrd $1, %bx,%bx
shld %bx, %bx
shld %cl, %bx, %bx
shld $1, %bx, %bx
shrd %bx, %bx
shrd %cl, %bx, %bx
shrd $1, %bx, %bx
// CHECK: sldtl %ecx
// CHECK: encoding: [0x0f,0x00,0xc1]