[mips] Remove codegen support from some 16 bit instructions

These instructions conflict with their full length variants
for the purposes of FastISel as they cannot be distingushed
based on the number and type of operands and predicates.

Reviewers: atanasyan

Differential Revision: https://reviews.llvm.org/D41285

llvm-svn: 325341

1 files changed, 67 insertions, 82 deletions

diff --git a/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll b/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll
index bc3a92550ff..140f545f239 100644
--- a/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll
+++ b/llvm/test/CodeGen/Mips/llvm-ir/ashr.ll
@@ -388,7 +388,7 @@ define signext i64 @ashr_i64(i64 signext %a, i64 signext %b) {
 ; MMR6-NEXT:    not16 $6, $7
 ; MMR6-NEXT:    sll16 $4, $4, 1
 ; MMR6-NEXT:    sllv $4, $4, $6
-; MMR6-NEXT:    or16 $4, $5
+; MMR6-NEXT:    or $4, $4, $5
 ; MMR6-NEXT:    seleqz $4, $4, $3
 ; MMR6-NEXT:    selnez $1, $1, $3
 ; MMR6-NEXT:    or $3, $1, $4
@@ -877,104 +877,89 @@ define signext i128 @ashr_i128(i128 signext %a, i128 signext %b) {
 ;
 ; MMR6-LABEL: ashr_i128:
 ; MMR6:       # %bb.0: # %entry
-; MMR6-NEXT:    addiu $sp, $sp, -40
-; MMR6-NEXT:    .cfi_def_cfa_offset 40
-; MMR6-NEXT:    sw $17, 36($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    sw $16, 32($sp) # 4-byte Folded Spill
+; MMR6-NEXT:    addiu $sp, $sp, -16
+; MMR6-NEXT:    .cfi_def_cfa_offset 16
+; MMR6-NEXT:    sw $17, 12($sp) # 4-byte Folded Spill
+; MMR6-NEXT:    sw $16, 8($sp) # 4-byte Folded Spill
 ; MMR6-NEXT:    .cfi_offset 17, -4
 ; MMR6-NEXT:    .cfi_offset 16, -8
 ; MMR6-NEXT:    move $1, $7
-; MMR6-NEXT:    sw $6, 28($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    move $6, $5
-; MMR6-NEXT:    sw $4, 12($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    lw $3, 68($sp)
+; MMR6-NEXT:    lw $3, 44($sp)
 ; MMR6-NEXT:    li16 $2, 64
 ; MMR6-NEXT:    subu16 $7, $2, $3
 ; MMR6-NEXT:    sllv $8, $5, $7
-; MMR6-NEXT:    andi16 $5, $7, 32
-; MMR6-NEXT:    selnez $9, $8, $5
-; MMR6-NEXT:    sllv $16, $4, $7
+; MMR6-NEXT:    andi16 $2, $7, 32
+; MMR6-NEXT:    selnez $9, $8, $2
+; MMR6-NEXT:    sllv $10, $4, $7
 ; MMR6-NEXT:    not16 $7, $7
-; MMR6-NEXT:    srl16 $17, $6, 1
-; MMR6-NEXT:    sw $6, 20($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    srlv $7, $17, $7
-; MMR6-NEXT:    or16 $7, $16
-; MMR6-NEXT:    seleqz $7, $7, $5
+; MMR6-NEXT:    srl16 $16, $5, 1
+; MMR6-NEXT:    srlv $7, $16, $7
+; MMR6-NEXT:    or $7, $10, $7
+; MMR6-NEXT:    seleqz $7, $7, $2
 ; MMR6-NEXT:    or $7, $9, $7
-; MMR6-NEXT:    srlv $17, $1, $3
-; MMR6-NEXT:    not16 $2, $3
-; MMR6-NEXT:    sw $2, 24($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    lw $4, 28($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    sll16 $16, $4, 1
-; MMR6-NEXT:    sllv $16, $16, $2
-; MMR6-NEXT:    or16 $16, $17
+; MMR6-NEXT:    srlv $9, $1, $3
+; MMR6-NEXT:    not16 $16, $3
+; MMR6-NEXT:    sw $16, 4($sp) # 4-byte Folded Spill
+; MMR6-NEXT:    sll16 $17, $6, 1
+; MMR6-NEXT:    sllv $10, $17, $16
+; MMR6-NEXT:    or $9, $10, $9
 ; MMR6-NEXT:    andi16 $17, $3, 32
-; MMR6-NEXT:    seleqz $9, $16, $17
-; MMR6-NEXT:    srlv $10, $4, $3
+; MMR6-NEXT:    seleqz $9, $9, $17
+; MMR6-NEXT:    srlv $10, $6, $3
 ; MMR6-NEXT:    selnez $11, $10, $17
-; MMR6-NEXT:    seleqz $16, $10, $17
-; MMR6-NEXT:    or16 $16, $7
-; MMR6-NEXT:    seleqz $2, $8, $5
-; MMR6-NEXT:    sw $2, 8($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    or $7, $11, $9
+; MMR6-NEXT:    seleqz $10, $10, $17
+; MMR6-NEXT:    or $10, $10, $7
+; MMR6-NEXT:    seleqz $12, $8, $2
+; MMR6-NEXT:    or $8, $11, $9
 ; MMR6-NEXT:    addiu $2, $3, -64
-; MMR6-NEXT:    srlv $4, $6, $2
-; MMR6-NEXT:    sw $4, 4($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    lw $5, 12($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    sll16 $4, $5, 1
-; MMR6-NEXT:    sw $4, 16($sp) # 4-byte Folded Spill
-; MMR6-NEXT:    not16 $6, $2
-; MMR6-NEXT:    sllv $6, $4, $6
-; MMR6-NEXT:    sltiu $8, $3, 64
-; MMR6-NEXT:    move $4, $7
-; MMR6-NEXT:    lw $7, 8($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    or16 $4, $7
-; MMR6-NEXT:    selnez $9, $16, $8
-; MMR6-NEXT:    lw $7, 4($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    or16 $6, $7
-; MMR6-NEXT:    srav $7, $5, $2
+; MMR6-NEXT:    srlv $9, $5, $2
+; MMR6-NEXT:    sll16 $7, $4, 1
+; MMR6-NEXT:    not16 $16, $2
+; MMR6-NEXT:    sllv $11, $7, $16
+; MMR6-NEXT:    sltiu $13, $3, 64
+; MMR6-NEXT:    or $8, $8, $12
+; MMR6-NEXT:    selnez $10, $10, $13
+; MMR6-NEXT:    or $9, $11, $9
+; MMR6-NEXT:    srav $11, $4, $2
 ; MMR6-NEXT:    andi16 $2, $2, 32
-; MMR6-NEXT:    seleqz $10, $7, $2
-; MMR6-NEXT:    sra $11, $5, 31
-; MMR6-NEXT:    selnez $12, $11, $2
-; MMR6-NEXT:    seleqz $6, $6, $2
-; MMR6-NEXT:    or $10, $12, $10
-; MMR6-NEXT:    seleqz $10, $10, $8
-; MMR6-NEXT:    selnez $2, $7, $2
-; MMR6-NEXT:    seleqz $7, $11, $8
-; MMR6-NEXT:    or $9, $9, $10
-; MMR6-NEXT:    selnez $9, $9, $3
-; MMR6-NEXT:    selnez $4, $4, $8
-; MMR6-NEXT:    or $2, $2, $6
-; MMR6-NEXT:    srav $5, $5, $3
-; MMR6-NEXT:    seleqz $6, $5, $17
-; MMR6-NEXT:    selnez $10, $11, $17
-; MMR6-NEXT:    or $6, $10, $6
-; MMR6-NEXT:    selnez $6, $6, $8
-; MMR6-NEXT:    seleqz $2, $2, $8
-; MMR6-NEXT:    lw $16, 28($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    seleqz $10, $16, $3
+; MMR6-NEXT:    seleqz $12, $11, $2
+; MMR6-NEXT:    sra $14, $4, 31
+; MMR6-NEXT:    selnez $15, $14, $2
+; MMR6-NEXT:    seleqz $9, $9, $2
+; MMR6-NEXT:    or $12, $15, $12
+; MMR6-NEXT:    seleqz $12, $12, $13
+; MMR6-NEXT:    selnez $2, $11, $2
+; MMR6-NEXT:    seleqz $11, $14, $13
+; MMR6-NEXT:    or $10, $10, $12
+; MMR6-NEXT:    selnez $10, $10, $3
+; MMR6-NEXT:    selnez $8, $8, $13
+; MMR6-NEXT:    or $2, $2, $9
+; MMR6-NEXT:    srav $9, $4, $3
+; MMR6-NEXT:    seleqz $4, $9, $17
+; MMR6-NEXT:    selnez $12, $14, $17
+; MMR6-NEXT:    or $4, $12, $4
+; MMR6-NEXT:    selnez $12, $4, $13
+; MMR6-NEXT:    seleqz $2, $2, $13
+; MMR6-NEXT:    seleqz $4, $6, $3
 ; MMR6-NEXT:    seleqz $1, $1, $3
-; MMR6-NEXT:    or $2, $4, $2
+; MMR6-NEXT:    or $2, $8, $2
 ; MMR6-NEXT:    selnez $2, $2, $3
 ; MMR6-NEXT:    or $1, $1, $2
-; MMR6-NEXT:    or $4, $10, $9
-; MMR6-NEXT:    or $2, $6, $7
-; MMR6-NEXT:    lw $6, 20($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    srlv $3, $6, $3
-; MMR6-NEXT:    lw $6, 24($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    lw $16, 16($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    sllv $6, $16, $6
-; MMR6-NEXT:    or16 $6, $3
-; MMR6-NEXT:    seleqz $3, $6, $17
-; MMR6-NEXT:    selnez $5, $5, $17
+; MMR6-NEXT:    or $4, $4, $10
+; MMR6-NEXT:    or $2, $12, $11
+; MMR6-NEXT:    srlv $3, $5, $3
+; MMR6-NEXT:    lw $5, 4($sp) # 4-byte Folded Reload
+; MMR6-NEXT:    sllv $5, $7, $5
 ; MMR6-NEXT:    or $3, $5, $3
-; MMR6-NEXT:    selnez $3, $3, $8
-; MMR6-NEXT:    or $3, $3, $7
+; MMR6-NEXT:    seleqz $3, $3, $17
+; MMR6-NEXT:    selnez $5, $9, $17
+; MMR6-NEXT:    or $3, $5, $3
+; MMR6-NEXT:    selnez $3, $3, $13
+; MMR6-NEXT:    or $3, $3, $11
 ; MMR6-NEXT:    move $5, $1
-; MMR6-NEXT:    lw $16, 32($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    lw $17, 36($sp) # 4-byte Folded Reload
-; MMR6-NEXT:    addiu $sp, $sp, 40
+; MMR6-NEXT:    lw $16, 8($sp) # 4-byte Folded Reload
+; MMR6-NEXT:    lw $17, 12($sp) # 4-byte Folded Reload
+; MMR6-NEXT:    addiu $sp, $sp, 16
 ; MMR6-NEXT:    jrc $ra
 entry:
 ; o32 shouldn't use TImode helpers.