[llvm] [RISCV] Add new tests for RISCV zicond extension (PR #143580)

[Mikhail Gudim via llvm-commits]

================
@@ -0,0 +1,181 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc -mtriple=riscv32 -O2 -verify-machineinstrs -mattr=+b,+zicond < %s | FileCheck %s -check-prefix=RV32ZICOND
+; RUN: llc -mtriple=riscv64 -O2 -verify-machineinstrs -mattr=+b,+zicond < %s | FileCheck %s -check-prefix=RV64ZICOND
+
+; (and (icmp x. 0, ne), (icmp y, 0, ne)) -> (czero.eqz (icmp x, 0, ne), y)
+define i32 @icmp_and(i64 %0, i64 %1) {
+; RV32ZICOND-LABEL: icmp_and:
+; RV32ZICOND:       # %bb.0:
+; RV32ZICOND-NEXT:    or a2, a2, a3
+; RV32ZICOND-NEXT:    or a0, a0, a1
+; RV32ZICOND-NEXT:    snez a1, a2
+; RV32ZICOND-NEXT:    snez a0, a0
+; RV32ZICOND-NEXT:    and a0, a0, a1
+; RV32ZICOND-NEXT:    ret
+;
+; RV64ZICOND-LABEL: icmp_and:
+; RV64ZICOND:       # %bb.0:
+; RV64ZICOND-NEXT:    snez a1, a1
+; RV64ZICOND-NEXT:    snez a0, a0
+; RV64ZICOND-NEXT:    and a0, a0, a1
+; RV64ZICOND-NEXT:    ret
+  %3 = icmp ne i64 %1, 0
+  %4 = icmp ne i64 %0, 0
+  %5 = and i1 %4, %3
+  %6 = zext i1 %5 to i32
+  ret i32 %6
+}
+
+; (and (and (icmp x, 0, ne), (icmp y, 0, ne)), (icmp z, 0, ne)) -> (czero.eqo (czero.eqz (icmp x, 0, ne), y), z)
+define i32 @icmp_and_and(i64 %0, i64 %1, i64 %2) {
+; RV32ZICOND-LABEL: icmp_and_and:
+; RV32ZICOND:       # %bb.0:
+; RV32ZICOND-NEXT:    or a2, a2, a3
+; RV32ZICOND-NEXT:    or a0, a0, a1
+; RV32ZICOND-NEXT:    or a4, a4, a5
+; RV32ZICOND-NEXT:    snez a1, a2
+; RV32ZICOND-NEXT:    snez a0, a0
+; RV32ZICOND-NEXT:    and a0, a1, a0
+; RV32ZICOND-NEXT:    snez a1, a4
+; RV32ZICOND-NEXT:    and a0, a1, a0
+; RV32ZICOND-NEXT:    ret
+;
+; RV64ZICOND-LABEL: icmp_and_and:
+; RV64ZICOND:       # %bb.0:
+; RV64ZICOND-NEXT:    snez a1, a1
+; RV64ZICOND-NEXT:    snez a0, a0
+; RV64ZICOND-NEXT:    and a0, a1, a0
+; RV64ZICOND-NEXT:    snez a1, a2
+; RV64ZICOND-NEXT:    and a0, a1, a0
+; RV64ZICOND-NEXT:    ret
+  %4 = icmp ne i64 %1, 0
+  %5 = icmp ne i64 %0, 0
+  %6 = and i1 %4, %5
+  %7 = icmp ne i64 %2, 0
+  %8 = and i1 %7, %6
+  %9 = zext i1 %8 to i32
+  ret i32 %9
+}
+
+; (select c, u, rotl(u, t)) -> (rotl (czero_nez t, c), u)
+define i64 @rotate_l_eqz(i64 %0, i64 %1, i64 %2, i64 %3) {
+; RV32ZICOND-LABEL: rotate_l_eqz:
+; RV32ZICOND:       # %bb.0:
+; RV32ZICOND-NEXT:    or a0, a6, a7
+; RV32ZICOND-NEXT:    bexti a1, a4, 5
+; RV32ZICOND-NEXT:    not a5, a4
+; RV32ZICOND-NEXT:    czero.nez a6, a3, a1
+; RV32ZICOND-NEXT:    czero.eqz a7, a2, a1
+; RV32ZICOND-NEXT:    czero.nez t0, a2, a1
+; RV32ZICOND-NEXT:    czero.eqz a1, a3, a1
+; RV32ZICOND-NEXT:    czero.nez a2, a2, a0
+; RV32ZICOND-NEXT:    czero.nez a3, a3, a0
+; RV32ZICOND-NEXT:    or a6, a7, a6
+; RV32ZICOND-NEXT:    or a1, a1, t0
+; RV32ZICOND-NEXT:    sll a7, a6, a4
+; RV32ZICOND-NEXT:    srli t0, a1, 1
+; RV32ZICOND-NEXT:    sll a1, a1, a4
+; RV32ZICOND-NEXT:    srli a4, a6, 1
+; RV32ZICOND-NEXT:    srl a6, t0, a5
+; RV32ZICOND-NEXT:    srl a4, a4, a5
+; RV32ZICOND-NEXT:    or a5, a7, a6
+; RV32ZICOND-NEXT:    or a1, a1, a4
+; RV32ZICOND-NEXT:    czero.eqz a1, a1, a0
+; RV32ZICOND-NEXT:    czero.eqz a4, a5, a0
+; RV32ZICOND-NEXT:    or a0, a2, a1
+; RV32ZICOND-NEXT:    or a1, a3, a4
+; RV32ZICOND-NEXT:    ret
+;
+; RV64ZICOND-LABEL: rotate_l_eqz:
+; RV64ZICOND:       # %bb.0:
+; RV64ZICOND-NEXT:    rol a0, a1, a2
+; RV64ZICOND-NEXT:    czero.nez a1, a1, a3
+; RV64ZICOND-NEXT:    czero.eqz a0, a0, a3
+; RV64ZICOND-NEXT:    or a0, a1, a0
+; RV64ZICOND-NEXT:    ret
+  %5 = icmp eq i64 %3, 0
+  %6 = call i64 @llvm.fshl.i64(i64 %1, i64 %1, i64 %2)
+  %7 = select i1 %5, i64 %1, i64 %6
+  ret i64 %7
+}
+
+; (select cond, const, t) -> (add (czero_nez t - const, cond), const)
+define i64 @select_imm_reg(i64 %0, i64 %1) {
+; RV32ZICOND-LABEL: select_imm_reg:
+; RV32ZICOND:       # %bb.0:
+; RV32ZICOND-NEXT:    xori a0, a0, 2
+; RV32ZICOND-NEXT:    or a1, a0, a1
+; RV32ZICOND-NEXT:    li a0, 3
+; RV32ZICOND-NEXT:    czero.eqz a2, a2, a1
+; RV32ZICOND-NEXT:    czero.nez a0, a0, a1
+; RV32ZICOND-NEXT:    or a0, a0, a2
+; RV32ZICOND-NEXT:    czero.eqz a1, a3, a1
+; RV32ZICOND-NEXT:    ret
+;
+; RV64ZICOND-LABEL: select_imm_reg:
+; RV64ZICOND:       # %bb.0:
+; RV64ZICOND-NEXT:    addi a0, a0, -2
+; RV64ZICOND-NEXT:    li a2, 3
+; RV64ZICOND-NEXT:    czero.eqz a1, a1, a0
+; RV64ZICOND-NEXT:    czero.nez a0, a2, a0
+; RV64ZICOND-NEXT:    or a0, a0, a1
+; RV64ZICOND-NEXT:    ret
+  %3 = icmp eq i64 %0, 2
+  %4 = select i1 %3, i64 3, i64 %1
+  ret i64 %4
+}
+
----------------
mgudim wrote:

tests for  (select c, c1, t) -> (add (czero_nez t - c1, c), c1) ?

https://github.com/llvm/llvm-project/pull/143580