[RISCV][test] Add new tests for add-mul optimization in the zba extension with SH*ADD

[benshi001]

Summary

These tests will show the following optimization by future patches.

Rx + Ry * 18 => (SH1ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 20 => (SH2ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 24 => (SH3ADD (SH1ADD Rx, Rx), Ry)
Rx + Ry * 36 => (SH2ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 40 => (SH3ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 72 => (SH3ADD (SH3ADD Rx, Rx), Ry)
Rx * (3 << C) => (SLLI (SH1ADD Rx, Rx), C)
Rx * (5 << C) => (SLLI (SH2ADD Rx, Rx), C)
Rx * (9 << C) => (SLLI (SH3ADD Rx, Rx), C)

[craig.topper]

LGTM

llvm/test/CodeGen/RISCV/rv32zba.ll

 ; RV32IBA-NEXT:    addi a2, zero, 12
 ; RV32IBA-NEXT:    mul a0, a0, a2
 ; RV32IBA-NEXT:    add a0, a0, a1
 ; RV32IBA-NEXT:    ret
   %c = mul i32 %a, 12
   %d = add i32 %c, %b
   ret i32 %d
 }
+
+define i32 @addmul18(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul18:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 18
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul18:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 18
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul18:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 18
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 18
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @addmul20(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul20:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 20
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul20:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 20
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul20:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 20
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 20
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @addmul24(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul24:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 24
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul24:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 24
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul24:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 24
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 24
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @addmul36(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul36:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 36
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul36:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 36
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul36:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 36
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 36
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @addmul40(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul40:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 40
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul40:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 40
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul40:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 40
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 40
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @addmul72(i32 %a, i32 %b) {
+; RV32I-LABEL: addmul72:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a2, zero, 72
+; RV32I-NEXT:    mul a0, a0, a2
+; RV32I-NEXT:    add a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: addmul72:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a2, zero, 72
+; RV32IB-NEXT:    mul a0, a0, a2
+; RV32IB-NEXT:    add a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: addmul72:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a2, zero, 72
+; RV32IBA-NEXT:    mul a0, a0, a2
+; RV32IBA-NEXT:    add a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 72
+  %d = add i32 %c, %b
+  ret i32 %d
+}
+
+define i32 @mul96(i32 %a) {
+; RV32I-LABEL: mul96:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a1, zero, 96
+; RV32I-NEXT:    mul a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: mul96:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a1, zero, 96
+; RV32IB-NEXT:    mul a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: mul96:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a1, zero, 96
+; RV32IBA-NEXT:    mul a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 96
+  ret i32 %c
+}
+
+define i32 @mul160(i32 %a) {
+; RV32I-LABEL: mul160:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a1, zero, 160
+; RV32I-NEXT:    mul a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: mul160:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a1, zero, 160
+; RV32IB-NEXT:    mul a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: mul160:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a1, zero, 160
+; RV32IBA-NEXT:    mul a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 160
+  ret i32 %c
+}
+
+define i32 @mul288(i32 %a) {
+; RV32I-LABEL: mul288:
+; RV32I:       # %bb.0:
+; RV32I-NEXT:    addi a1, zero, 288
+; RV32I-NEXT:    mul a0, a0, a1
+; RV32I-NEXT:    ret
+;
+; RV32IB-LABEL: mul288:
+; RV32IB:       # %bb.0:
+; RV32IB-NEXT:    addi a1, zero, 288
+; RV32IB-NEXT:    mul a0, a0, a1
+; RV32IB-NEXT:    ret
+;
+; RV32IBA-LABEL: mul288:
+; RV32IBA:       # %bb.0:
+; RV32IBA-NEXT:    addi a1, zero, 288
+; RV32IBA-NEXT:    mul a0, a0, a1
+; RV32IBA-NEXT:    ret
+  %c = mul i32 %a, 288
+  ret i32 %c
+}

llvm/test/CodeGen/RISCV/rv64zba.ll

 ; RV64IBA-NEXT:    mul a0, a0, a2
 ; RV64IBA-NEXT:    add a0, a0, a1
 ; RV64IBA-NEXT:    ret
   %c = mul i64 %a, 12
   %d = add i64 %c, %b
   ret i64 %d
 }
 
-define i32 @addmulw6(i32 signext %a, i32 signext %b) {
-; RV64I-LABEL: addmulw6:
+define i64 @addmul18(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul18:
 ; RV64I:       # %bb.0:
-; RV64I-NEXT:    addi a2, zero, 6
+; RV64I-NEXT:    addi a2, zero, 18
 ; RV64I-NEXT:    mul a0, a0, a2
-; RV64I-NEXT:    addw a0, a0, a1
+; RV64I-NEXT:    add a0, a0, a1
 ; RV64I-NEXT:    ret
 ;
-; RV64IB-LABEL: addmulw6:
+; RV64IB-LABEL: addmul18:
 ; RV64IB:       # %bb.0:
-; RV64IB-NEXT:    addi a2, zero, 6
+; RV64IB-NEXT:    addi a2, zero, 18
 ; RV64IB-NEXT:    mul a0, a0, a2
-; RV64IB-NEXT:    addw a0, a0, a1
+; RV64IB-NEXT:    add a0, a0, a1
 ; RV64IB-NEXT:    ret
 ;
-; RV64IBA-LABEL: addmulw6:
+; RV64IBA-LABEL: addmul18:
 ; RV64IBA:       # %bb.0:
-; RV64IBA-NEXT:    addi a2, zero, 6
+; RV64IBA-NEXT:    addi a2, zero, 18
 ; RV64IBA-NEXT:    mul a0, a0, a2
-; RV64IBA-NEXT:    addw a0, a0, a1
+; RV64IBA-NEXT:    add a0, a0, a1
 ; RV64IBA-NEXT:    ret
-  %c = mul i32 %a, 6
-  %d = add i32 %c, %b
-  ret i32 %d
+  %c = mul i64 %a, 18
+  %d = add i64 %c, %b
+  ret i64 %d
 }
 
-define i32 @addmulw10(i32 signext %a, i32 signext %b) {
-; RV64I-LABEL: addmulw10:
+define i64 @addmul20(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul20:
 ; RV64I:       # %bb.0:
-; RV64I-NEXT:    addi a2, zero, 10
+; RV64I-NEXT:    addi a2, zero, 20
 ; RV64I-NEXT:    mul a0, a0, a2
-; RV64I-NEXT:    addw a0, a0, a1
+; RV64I-NEXT:    add a0, a0, a1
 ; RV64I-NEXT:    ret
 ;
-; RV64IB-LABEL: addmulw10:
+; RV64IB-LABEL: addmul20:
 ; RV64IB:       # %bb.0:
-; RV64IB-NEXT:    addi a2, zero, 10
+; RV64IB-NEXT:    addi a2, zero, 20
 ; RV64IB-NEXT:    mul a0, a0, a2
-; RV64IB-NEXT:    addw a0, a0, a1
+; RV64IB-NEXT:    add a0, a0, a1
 ; RV64IB-NEXT:    ret
 ;
-; RV64IBA-LABEL: addmulw10:
+; RV64IBA-LABEL: addmul20:
 ; RV64IBA:       # %bb.0:
-; RV64IBA-NEXT:    addi a2, zero, 10
+; RV64IBA-NEXT:    addi a2, zero, 20
 ; RV64IBA-NEXT:    mul a0, a0, a2
-; RV64IBA-NEXT:    addw a0, a0, a1
+; RV64IBA-NEXT:    add a0, a0, a1
 ; RV64IBA-NEXT:    ret
-  %c = mul i32 %a, 10
-  %d = add i32 %c, %b
-  ret i32 %d
+  %c = mul i64 %a, 20
+  %d = add i64 %c, %b
+  ret i64 %d
 }
 
-define i32 @addmulw12(i32 signext %a, i32 signext %b) {
-; RV64I-LABEL: addmulw12:
+define i64 @addmul24(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul24:
 ; RV64I:       # %bb.0:
-; RV64I-NEXT:    addi a2, zero, 12
+; RV64I-NEXT:    addi a2, zero, 24
 ; RV64I-NEXT:    mul a0, a0, a2
-; RV64I-NEXT:    addw a0, a0, a1
+; RV64I-NEXT:    add a0, a0, a1
 ; RV64I-NEXT:    ret
 ;
-; RV64IB-LABEL: addmulw12:
+; RV64IB-LABEL: addmul24:
 ; RV64IB:       # %bb.0:
-; RV64IB-NEXT:    addi a2, zero, 12
+; RV64IB-NEXT:    addi a2, zero, 24
 ; RV64IB-NEXT:    mul a0, a0, a2
-; RV64IB-NEXT:    addw a0, a0, a1
+; RV64IB-NEXT:    add a0, a0, a1
 ; RV64IB-NEXT:    ret
 ;
-; RV64IBA-LABEL: addmulw12:
+; RV64IBA-LABEL: addmul24:
 ; RV64IBA:       # %bb.0:
-; RV64IBA-NEXT:    addi a2, zero, 12
+; RV64IBA-NEXT:    addi a2, zero, 24
+; RV64IBA-NEXT:    mul a0, a0, a2
+; RV64IBA-NEXT:    add a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 24
+  %d = add i64 %c, %b
+  ret i64 %d
+}
+
+define i64 @addmul36(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul36:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a2, zero, 36
+; RV64I-NEXT:    mul a0, a0, a2
+; RV64I-NEXT:    add a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: addmul36:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a2, zero, 36
+; RV64IB-NEXT:    mul a0, a0, a2
+; RV64IB-NEXT:    add a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: addmul36:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a2, zero, 36
+; RV64IBA-NEXT:    mul a0, a0, a2
+; RV64IBA-NEXT:    add a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 36
+  %d = add i64 %c, %b
+  ret i64 %d
+}
+
+define i64 @addmul40(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul40:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a2, zero, 40
+; RV64I-NEXT:    mul a0, a0, a2
+; RV64I-NEXT:    add a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: addmul40:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a2, zero, 40
+; RV64IB-NEXT:    mul a0, a0, a2
+; RV64IB-NEXT:    add a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: addmul40:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a2, zero, 40
 ; RV64IBA-NEXT:    mul a0, a0, a2
-; RV64IBA-NEXT:    addw a0, a0, a1
+; RV64IBA-NEXT:    add a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 40
+  %d = add i64 %c, %b
+  ret i64 %d
+}
+
+define i64 @addmul72(i64 %a, i64 %b) {
+; RV64I-LABEL: addmul72:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a2, zero, 72
+; RV64I-NEXT:    mul a0, a0, a2
+; RV64I-NEXT:    add a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: addmul72:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a2, zero, 72
+; RV64IB-NEXT:    mul a0, a0, a2
+; RV64IB-NEXT:    add a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: addmul72:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a2, zero, 72
+; RV64IBA-NEXT:    mul a0, a0, a2
+; RV64IBA-NEXT:    add a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 72
+  %d = add i64 %c, %b
+  ret i64 %d
+}
+
+define i64 @mul96(i64 %a) {
+; RV64I-LABEL: mul96:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a1, zero, 96
+; RV64I-NEXT:    mul a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: mul96:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a1, zero, 96
+; RV64IB-NEXT:    mul a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: mul96:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a1, zero, 96
+; RV64IBA-NEXT:    mul a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 96
+  ret i64 %c
+}
+
+define i64 @mul160(i64 %a) {
+; RV64I-LABEL: mul160:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a1, zero, 160
+; RV64I-NEXT:    mul a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: mul160:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a1, zero, 160
+; RV64IB-NEXT:    mul a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: mul160:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a1, zero, 160
+; RV64IBA-NEXT:    mul a0, a0, a1
+; RV64IBA-NEXT:    ret
+  %c = mul i64 %a, 160
+  ret i64 %c
+}
+
+define i64 @mul288(i64 %a) {
+; RV64I-LABEL: mul288:
+; RV64I:       # %bb.0:
+; RV64I-NEXT:    addi a1, zero, 288
+; RV64I-NEXT:    mul a0, a0, a1
+; RV64I-NEXT:    ret
+;
+; RV64IB-LABEL: mul288:
+; RV64IB:       # %bb.0:
+; RV64IB-NEXT:    addi a1, zero, 288
+; RV64IB-NEXT:    mul a0, a0, a1
+; RV64IB-NEXT:    ret
+;
+; RV64IBA-LABEL: mul288:
+; RV64IBA:       # %bb.0:
+; RV64IBA-NEXT:    addi a1, zero, 288
+; RV64IBA-NEXT:    mul a0, a0, a1
 ; RV64IBA-NEXT:    ret
-  %c = mul i32 %a, 12
-  %d = add i32 %c, %b
-  ret i32 %d
+  %c = mul i64 %a, 288
+  ret i64 %c
 }