1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=1 | FileCheck %s --check-prefixes=NO_FOLDING 3; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=1 | FileCheck %s --check-prefixes=NO_FOLDING 4; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=2 | FileCheck %s --check-prefixes=NO_FOLDING 5; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=2 | FileCheck %s --check-prefixes=NO_FOLDING 6; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=3 | FileCheck %s --check-prefixes=FOLDING 7; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - --riscv-lower-ext-max-web-size=3 | FileCheck %s --check-prefixes=FOLDING 8; Check that the default value enables the web folding and 9; that it is bigger than 3. 10; RUN: llc -mtriple=riscv32 -mattr=+v -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=FOLDING 11; RUN: llc -mtriple=riscv64 -mattr=+v -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=FOLDING 12 13 14; Check that the add/sub/mul operations are all promoted into their 15; vw counterpart when the folding of the web size is increased to 3. 16; We need the web size to be at least 3 for the folding to happen, because 17; %c has 3 uses. 18define <2 x i16> @vwmul_v2i16_multiple_users(ptr %x, ptr %y, ptr %z) { 19; NO_FOLDING-LABEL: vwmul_v2i16_multiple_users: 20; NO_FOLDING: # %bb.0: 21; NO_FOLDING-NEXT: vsetivli zero, 2, e16, mf4, ta, ma 22; NO_FOLDING-NEXT: vle8.v v8, (a0) 23; NO_FOLDING-NEXT: vle8.v v9, (a1) 24; NO_FOLDING-NEXT: vle8.v v10, (a2) 25; NO_FOLDING-NEXT: vsext.vf2 v11, v8 26; NO_FOLDING-NEXT: vsext.vf2 v8, v9 27; NO_FOLDING-NEXT: vsext.vf2 v9, v10 28; NO_FOLDING-NEXT: vmul.vv v8, v11, v8 29; NO_FOLDING-NEXT: vadd.vv v10, v11, v9 30; NO_FOLDING-NEXT: vsub.vv v9, v11, v9 31; NO_FOLDING-NEXT: vor.vv v8, v8, v10 32; NO_FOLDING-NEXT: vor.vv v8, v8, v9 33; NO_FOLDING-NEXT: ret 34; 35; FOLDING-LABEL: vwmul_v2i16_multiple_users: 36; FOLDING: # %bb.0: 37; FOLDING-NEXT: vsetivli zero, 2, e8, mf8, ta, ma 38; FOLDING-NEXT: vle8.v v8, (a0) 39; FOLDING-NEXT: vle8.v v9, (a1) 40; FOLDING-NEXT: vle8.v v10, (a2) 41; FOLDING-NEXT: vwmul.vv v11, v8, v9 42; FOLDING-NEXT: vwadd.vv v9, v8, v10 43; FOLDING-NEXT: vwsub.vv v12, v8, v10 44; FOLDING-NEXT: vsetvli zero, zero, e16, mf4, ta, ma 45; FOLDING-NEXT: vor.vv v8, v11, v9 46; FOLDING-NEXT: vor.vv v8, v8, v12 47; FOLDING-NEXT: ret 48 %a = load <2 x i8>, ptr %x 49 %b = load <2 x i8>, ptr %y 50 %b2 = load <2 x i8>, ptr %z 51 %c = sext <2 x i8> %a to <2 x i16> 52 %d = sext <2 x i8> %b to <2 x i16> 53 %d2 = sext <2 x i8> %b2 to <2 x i16> 54 %e = mul <2 x i16> %c, %d 55 %f = add <2 x i16> %c, %d2 56 %g = sub <2 x i16> %c, %d2 57 %h = or <2 x i16> %e, %f 58 %i = or <2 x i16> %h, %g 59 ret <2 x i16> %i 60} 61