; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=1 | FileCheck %s --check-prefixes=NO_FOLDING ; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=1 | FileCheck %s --check-prefixes=NO_FOLDING ; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=2 | FileCheck %s --check-prefixes=NO_FOLDING ; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=2 | FileCheck %s --check-prefixes=NO_FOLDING ; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=3 | FileCheck %s --check-prefixes=FOLDING ; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=3 | FileCheck %s --check-prefixes=FOLDING ; Check that the default value enables the web folding and ; that it is bigger than 3. ; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=FOLDING ; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=FOLDING ; Check that the add/sub/mul operations are all promoted into their ; vw counterpart when the folding of the web size is increased to 3. ; We need the web size to be at least 3 for the folding to happen, because ; %c has 3 uses. define <2 x i16> @vwmul_v2i16_multiple_users(ptr %x, ptr %y, ptr %z) { ; NO_FOLDING-LABEL: vwmul_v2i16_multiple_users: ; NO_FOLDING: # %bb.0: ; NO_FOLDING-NEXT: vsetivli zero, 2, e16, mf4, ta, ma ; NO_FOLDING-NEXT: vle8.v v8, (a0) ; NO_FOLDING-NEXT: vle8.v v9, (a1) ; NO_FOLDING-NEXT: vle8.v v10, (a2) ; NO_FOLDING-NEXT: vsext.vf2 v11, v8 ; NO_FOLDING-NEXT: vsext.vf2 v8, v9 ; NO_FOLDING-NEXT: vsext.vf2 v9, v10 ; NO_FOLDING-NEXT: vmul.vv v8, v11, v8 ; NO_FOLDING-NEXT: vadd.vv v10, v11, v9 ; NO_FOLDING-NEXT: vsub.vv v9, v11, v9 ; NO_FOLDING-NEXT: vor.vv v8, v8, v10 ; NO_FOLDING-NEXT: vor.vv v8, v8, v9 ; NO_FOLDING-NEXT: ret ; ; FOLDING-LABEL: vwmul_v2i16_multiple_users: ; FOLDING: # %bb.0: ; FOLDING-NEXT: vsetivli zero, 2, e8, mf8, ta, ma ; FOLDING-NEXT: vle8.v v8, (a0) ; FOLDING-NEXT: vle8.v v9, (a1) ; FOLDING-NEXT: vle8.v v10, (a2) ; FOLDING-NEXT: vwmul.vv v11, v8, v9 ; FOLDING-NEXT: vwadd.vv v9, v8, v10 ; FOLDING-NEXT: vwsub.vv v12, v8, v10 ; FOLDING-NEXT: vsetvli zero, zero, e16, mf4, ta, ma ; FOLDING-NEXT: vor.vv v8, v11, v9 ; FOLDING-NEXT: vor.vv v8, v8, v12 ; FOLDING-NEXT: ret %a = load <2 x i8>, ptr %x %b = load <2 x i8>, ptr %y %b2 = load <2 x i8>, ptr %z %c = sext <2 x i8> %a to <2 x i16> %d = sext <2 x i8> %b to <2 x i16> %d2 = sext <2 x i8> %b2 to <2 x i16> %e = mul <2 x i16> %c, %d %f = add <2 x i16> %c, %d2 %g = sub <2 x i16> %c, %d2 %h = or <2 x i16> %e, %f %i = or <2 x i16> %h, %g ret <2 x i16> %i }