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[mips] Fix two patterns that select i32's (for MIPS32r6) / i64's (for MIPS64r6)

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from setne comparison with an i32.

The patterns that are fixed:
  * (select (i32 (setne i32, immZExt16)), i32, i32) (for MIPS32r6)
  * (select (i32 (setne i32, immZExt16)), i64, i64) (for MIPS64r6)

llvm-svn: 213653
This commit is contained in:
Sasa Stankovic 2014-07-22 13:36:02 +00:00
parent 50a62c2883
commit 6c6f1ac7c2
3 changed files with 78 additions and 4 deletions
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4
lib/Target/Mips/Mips32r6InstrInfo.td
View File

@ -796,8 +796,8 @@ def : MipsPat<(select (i32 (seteq i32:$cond, immZExt16:$imm)), i32:$t, i32:$f),
(SELNEZ i32:$f, (XORi i32:$cond, immZExt16:$imm)))>,
ISA_MIPS32R6;
def : MipsPat<(select (i32 (setne i32:$cond, immZExt16:$imm)), i32:$t, i32:$f),
(OR (SELNEZ i32:$f, (XORi i32:$cond, immZExt16:$imm)),
(SELEQZ i32:$t, (XORi i32:$cond, immZExt16:$imm)))>,
(OR (SELNEZ i32:$t, (XORi i32:$cond, immZExt16:$imm)),
(SELEQZ i32:$f, (XORi i32:$cond, immZExt16:$imm)))>,
ISA_MIPS32R6;
def : MipsPat<(select (i32 (setgt i32:$cond, immSExt16Plus1:$imm)), i32:$t,
i32:$f),

4
lib/Target/Mips/Mips64r6InstrInfo.td
View File

@ -191,9 +191,9 @@ def : MipsPat<(select (i32 (seteq i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
immZExt16:$imm))))>,
ISA_MIPS64R6;
def : MipsPat<(select (i32 (setne i32:$cond, immZExt16:$imm)), i64:$t, i64:$f),
(OR64 (SELNEZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
(OR64 (SELNEZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
immZExt16:$imm))),
(SELEQZ64 i64:$t, (SLL64_32 (XORi i32:$cond,
(SELEQZ64 i64:$f, (SLL64_32 (XORi i32:$cond,
immZExt16:$imm))))>,
ISA_MIPS64R6;

74
test/CodeGen/Mips/cmov.ll
View File

@ -116,6 +116,39 @@ entry:
ret i32 %cond
}
; ALL-LABEL: cmov3_ne:
; We won't check the result register since we can't know if the move is first
; or last. We do know it will be either one of two registers so we can at least
; check that.
; FIXME: Use xori instead of addiu+xor.
; 32-CMOV: addiu $[[R0:[0-9]+]], $zero, 234
; 32-CMOV: xor $[[R1:[0-9]+]], $4, $[[R0]]
; 32-CMOV: movn ${{[26]}}, $5, $[[R1]]
; 32-CMP-DAG: xori $[[CC:[0-9]+]], $4, 234
; 32-CMP-DAG: selnez $[[T0:[0-9]+]], $5, $[[CC]]
; 32-CMP-DAG: seleqz $[[T1:[0-9]+]], $6, $[[CC]]
; 32-CMP-DAG: or $2, $[[T0]], $[[T1]]
; FIXME: Use xori instead of addiu+xor.
; 64-CMOV: addiu $[[R0:[0-9]+]], $zero, 234
; 64-CMOV: xor $[[R1:[0-9]+]], $4, $[[R0]]
; 64-CMOV: movn ${{[26]}}, $5, $[[R1]]
; 64-CMP-DAG: xori $[[CC:[0-9]+]], $4, 234
; 64-CMP-DAG: selnez $[[T0:[0-9]+]], $5, $[[CC]]
; 64-CMP-DAG: seleqz $[[T1:[0-9]+]], $6, $[[CC]]
; 64-CMP-DAG: or $2, $[[T0]], $[[T1]]
define i32 @cmov3_ne(i32 %a, i32 %b, i32 %c) nounwind readnone {
entry:
%cmp = icmp ne i32 %a, 234
%cond = select i1 %cmp, i32 %b, i32 %c
ret i32 %cond
}
; ALL-LABEL: cmov4:
; We won't check the result register since we can't know if the move is first
@ -153,6 +186,47 @@ entry:
ret i64 %cond
}
; ALL-LABEL: cmov4_ne:
; We won't check the result register since we can't know if the move is first
; or last. We do know it will be one of two registers so we can at least check
; that.
; FIXME: Use xori instead of addiu+xor.
; 32-CMOV-DAG: addiu $[[R0:[0-9]+]], $zero, 234
; 32-CMOV-DAG: xor $[[R1:[0-9]+]], $4, $[[R0]]
; 32-CMOV-DAG: lw $[[R2:2]], 16($sp)
; 32-CMOV-DAG: lw $[[R3:3]], 20($sp)
; 32-CMOV-DAG: movn $[[R2]], $6, $[[R1]]
; 32-CMOV-DAG: movn $[[R3]], $7, $[[R1]]
; 32-CMP-DAG: xori $[[R0:[0-9]+]], $4, 234
; 32-CMP-DAG: lw $[[R1:[0-9]+]], 16($sp)
; 32-CMP-DAG: lw $[[R2:[0-9]+]], 20($sp)
; 32-CMP-DAG: selnez $[[T0:[0-9]+]], $6, $[[R0]]
; 32-CMP-DAG: selnez $[[T1:[0-9]+]], $7, $[[R0]]
; 32-CMP-DAG: seleqz $[[T2:[0-9]+]], $[[R1]], $[[R0]]
; 32-CMP-DAG: seleqz $[[T3:[0-9]+]], $[[R2]], $[[R0]]
; 32-CMP-DAG: or $2, $[[T0]], $[[T2]]
; 32-CMP-DAG: or $3, $[[T1]], $[[T3]]
; FIXME: Use xori instead of addiu+xor.
; 64-CMOV: addiu $[[R0:[0-9]+]], $zero, 234
; 64-CMOV: xor $[[R1:[0-9]+]], $4, $[[R0]]
; 64-CMOV: movn ${{[26]}}, $5, $[[R1]]
; 64-CMP-DAG: xori $[[R0:[0-9]+]], $4, 234
; 64-CMP-DAG: selnez $[[T0:[0-9]+]], $5, $[[R0]]
; 64-CMP-DAG: seleqz $[[T1:[0-9]+]], $6, $[[R0]]
; 64-CMP-DAG: or $2, $[[T0]], $[[T1]]
define i64 @cmov4_ne(i32 %a, i64 %b, i64 %c) nounwind readnone {
entry:
%cmp = icmp ne i32 %a, 234
%cond = select i1 %cmp, i64 %b, i64 %c
ret i64 %cond
}
; slti and conditional move.
;
; Check that, pattern