[RISCV] Remove RV32 FIXMEs completed in #107290. NFC

Author: lukel97

llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vadd-vp.ll

@@ -1392,8 +1392,6 @@ define <32 x i64> @vadd_vi_v32i64_unmasked(<32 x i64> %va, i32 zeroext %evl) {
   ret <32 x i64> %v
 }
 
-; FIXME: We don't match vadd.vi on RV32.
-
 define <32 x i64> @vadd_vx_v32i64_evl12(<32 x i64> %va, <32 x i1> %m) {
 ; CHECK-LABEL: vadd_vx_v32i64_evl12:
 ; CHECK:       # %bb.0:

llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vsadd-vp.ll

@@ -1405,8 +1405,6 @@ define <32 x i64> @vsadd_vi_v32i64_unmasked(<32 x i64> %va, i32 zeroext %evl) {
   ret <32 x i64> %v
 }
 
-; FIXME: We don't match vsadd.vi on RV32.
-
 define <32 x i64> @vsadd_vx_v32i64_evl12(<32 x i64> %va, <32 x i1> %m) {
 ; CHECK-LABEL: vsadd_vx_v32i64_evl12:
 ; CHECK:       # %bb.0:

llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vsaddu-vp.ll

@@ -1401,8 +1401,6 @@ define <32 x i64> @vsaddu_vi_v32i64_unmasked(<32 x i64> %va, i32 zeroext %evl) {
   ret <32 x i64> %v
 }
 
-; FIXME: We don't match vsaddu.vi on RV32.
-
 define <32 x i64> @vsaddu_vx_v32i64_evl12(<32 x i64> %va, <32 x i1> %m) {
 ; CHECK-LABEL: vsaddu_vx_v32i64_evl12:
 ; CHECK:       # %bb.0:

llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vssub-vp.ll

@@ -1447,8 +1447,6 @@ define <32 x i64> @vssub_vi_v32i64_unmasked(<32 x i64> %va, i32 zeroext %evl) {
   ret <32 x i64> %v
 }
 
-; FIXME: We don't match vssub.vi on RV32.
-
 define <32 x i64> @vssub_vx_v32i64_evl12(<32 x i64> %va, <32 x i1> %m) {
 ; CHECK-LABEL: vssub_vx_v32i64_evl12:
 ; CHECK:       # %bb.0:

llvm/test/CodeGen/RISCV/rvv/fixed-vectors-vssubu-vp.ll

@@ -1442,8 +1442,6 @@ define <32 x i64> @vssubu_vi_v32i64_unmasked(<32 x i64> %va, i32 zeroext %evl) {
   ret <32 x i64> %v
 }
 
-; FIXME: We don't match vssubu.vi on RV32.
-
 define <32 x i64> @vssubu_vx_v32i64_evl12(<32 x i64> %va, <32 x i1> %m) {
 ; CHECK-LABEL: vssubu_vx_v32i64_evl12:
 ; CHECK:       # %bb.0: