diff options
Diffstat (limited to 'llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll')
| -rw-r--r-- | llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll b/llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll index fe605d5..d99e3a7 100644 --- a/llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll +++ b/llvm/test/CodeGen/RISCV/rvv/vscale-vw-web-simplification.ll @@ -10,12 +10,14 @@ ; 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 +; FIXME: We should use vwadd/vwsub/vwmul instructions. ; Check that the scalable vector 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. ; see https://github.com/llvm/llvm-project/pull/72340 +; FIXME: We don't currently use widening instructions. define <vscale x 2 x i16> @vwop_vscale_sext_multiple_users(ptr %x, ptr %y, ptr %z) { ; NO_FOLDING-LABEL: vwop_vscale_sext_multiple_users: ; NO_FOLDING: # %bb.0: @@ -35,16 +37,18 @@ define <vscale x 2 x i16> @vwop_vscale_sext_multiple_users(ptr %x, ptr %y, ptr % ; ; FOLDING-LABEL: vwop_vscale_sext_multiple_users: ; FOLDING: # %bb.0: -; FOLDING-NEXT: vsetvli a3, zero, e8, mf4, ta, ma +; FOLDING-NEXT: vsetvli a3, zero, e16, mf2, 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, mf2, ta, ma -; FOLDING-NEXT: vor.vv v8, v11, v9 -; FOLDING-NEXT: vor.vv v8, v8, v12 +; FOLDING-NEXT: vsext.vf2 v11, v8 +; FOLDING-NEXT: vsext.vf2 v8, v9 +; FOLDING-NEXT: vsext.vf2 v9, v10 +; FOLDING-NEXT: vmul.vv v8, v11, v8 +; FOLDING-NEXT: vadd.vv v10, v11, v9 +; FOLDING-NEXT: vsub.vv v9, v11, v9 +; FOLDING-NEXT: vor.vv v8, v8, v10 +; FOLDING-NEXT: vor.vv v8, v8, v9 ; FOLDING-NEXT: ret %a = load <vscale x 2 x i8>, ptr %x %b = load <vscale x 2 x i8>, ptr %y @@ -81,16 +85,18 @@ define <vscale x 2 x i16> @vwop_vscale_zext_multiple_users(ptr %x, ptr %y, ptr % ; ; FOLDING-LABEL: vwop_vscale_zext_multiple_users: ; FOLDING: # %bb.0: -; FOLDING-NEXT: vsetvli a3, zero, e8, mf4, ta, ma +; FOLDING-NEXT: vsetvli a3, zero, e16, mf2, ta, ma ; FOLDING-NEXT: vle8.v v8, (a0) ; FOLDING-NEXT: vle8.v v9, (a1) ; FOLDING-NEXT: vle8.v v10, (a2) -; FOLDING-NEXT: vwmulu.vv v11, v8, v9 -; FOLDING-NEXT: vwaddu.vv v9, v8, v10 -; FOLDING-NEXT: vwsubu.vv v12, v8, v10 -; FOLDING-NEXT: vsetvli zero, zero, e16, mf2, ta, ma -; FOLDING-NEXT: vor.vv v8, v11, v9 -; FOLDING-NEXT: vor.vv v8, v8, v12 +; FOLDING-NEXT: vzext.vf2 v11, v8 +; FOLDING-NEXT: vzext.vf2 v8, v9 +; FOLDING-NEXT: vzext.vf2 v9, v10 +; FOLDING-NEXT: vmul.vv v8, v11, v8 +; FOLDING-NEXT: vadd.vv v10, v11, v9 +; FOLDING-NEXT: vsub.vv v9, v11, v9 +; FOLDING-NEXT: vor.vv v8, v8, v10 +; FOLDING-NEXT: vor.vv v8, v8, v9 ; FOLDING-NEXT: ret %a = load <vscale x 2 x i8>, ptr %x %b = load <vscale x 2 x i8>, ptr %y |