| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=riscv32 -mattr=+m | FileCheck %s --check-prefix=RV32I |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+m | FileCheck %s --check-prefix=RV64I |
| ; RUN: llc < %s -mtriple=riscv32 -mattr=+m,+experimental-zbb | FileCheck %s --check-prefixes=RV32IZbb,RV32IZbbNOZbt |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+m,+experimental-zbb | FileCheck %s --check-prefixes=RV64IZbb,RV64IZbbNOZbt |
| ; RUN: llc < %s -mtriple=riscv32 -mattr=+m,+experimental-zbb,+experimental-zbt | FileCheck %s --check-prefixes=RV32IZbb,RV32IZbbZbt |
| ; RUN: llc < %s -mtriple=riscv64 -mattr=+m,+experimental-zbb,+experimental-zbt | FileCheck %s --check-prefixes=RV64IZbb,RV64IZbbZbt |
| |
| declare i4 @llvm.ssub.sat.i4(i4, i4) |
| declare i8 @llvm.ssub.sat.i8(i8, i8) |
| declare i16 @llvm.ssub.sat.i16(i16, i16) |
| declare i32 @llvm.ssub.sat.i32(i32, i32) |
| declare i64 @llvm.ssub.sat.i64(i64, i64) |
| |
| define i32 @func32(i32 %x, i32 %y, i32 %z) nounwind { |
| ; RV32I-LABEL: func32: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: mv a3, a0 |
| ; RV32I-NEXT: mul a0, a1, a2 |
| ; RV32I-NEXT: sgtz a1, a0 |
| ; RV32I-NEXT: sub a0, a3, a0 |
| ; RV32I-NEXT: slt a2, a0, a3 |
| ; RV32I-NEXT: beq a1, a2, .LBB0_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: srai a0, a0, 31 |
| ; RV32I-NEXT: lui a1, 524288 |
| ; RV32I-NEXT: xor a0, a0, a1 |
| ; RV32I-NEXT: .LBB0_2: |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func32: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: sext.w a0, a0 |
| ; RV64I-NEXT: mulw a1, a1, a2 |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 524288 |
| ; RV64I-NEXT: addiw a2, a1, -1 |
| ; RV64I-NEXT: bge a0, a2, .LBB0_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: bge a1, a0, .LBB0_4 |
| ; RV64I-NEXT: .LBB0_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB0_3: |
| ; RV64I-NEXT: mv a0, a2 |
| ; RV64I-NEXT: blt a1, a0, .LBB0_2 |
| ; RV64I-NEXT: .LBB0_4: |
| ; RV64I-NEXT: lui a0, 524288 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbbNOZbt-LABEL: func32: |
| ; RV32IZbbNOZbt: # %bb.0: |
| ; RV32IZbbNOZbt-NEXT: mv a3, a0 |
| ; RV32IZbbNOZbt-NEXT: mul a0, a1, a2 |
| ; RV32IZbbNOZbt-NEXT: sgtz a1, a0 |
| ; RV32IZbbNOZbt-NEXT: sub a0, a3, a0 |
| ; RV32IZbbNOZbt-NEXT: slt a2, a0, a3 |
| ; RV32IZbbNOZbt-NEXT: beq a1, a2, .LBB0_2 |
| ; RV32IZbbNOZbt-NEXT: # %bb.1: |
| ; RV32IZbbNOZbt-NEXT: srai a0, a0, 31 |
| ; RV32IZbbNOZbt-NEXT: lui a1, 524288 |
| ; RV32IZbbNOZbt-NEXT: xor a0, a0, a1 |
| ; RV32IZbbNOZbt-NEXT: .LBB0_2: |
| ; RV32IZbbNOZbt-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func32: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sext.w a0, a0 |
| ; RV64IZbb-NEXT: mulw a1, a1, a2 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 524288 |
| ; RV64IZbb-NEXT: addiw a2, a1, -1 |
| ; RV64IZbb-NEXT: min a0, a0, a2 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| ; |
| ; RV32IZbbZbt-LABEL: func32: |
| ; RV32IZbbZbt: # %bb.0: |
| ; RV32IZbbZbt-NEXT: mul a1, a1, a2 |
| ; RV32IZbbZbt-NEXT: sgtz a2, a1 |
| ; RV32IZbbZbt-NEXT: sub a1, a0, a1 |
| ; RV32IZbbZbt-NEXT: slt a0, a1, a0 |
| ; RV32IZbbZbt-NEXT: xor a0, a2, a0 |
| ; RV32IZbbZbt-NEXT: srai a2, a1, 31 |
| ; RV32IZbbZbt-NEXT: lui a3, 524288 |
| ; RV32IZbbZbt-NEXT: xor a2, a2, a3 |
| ; RV32IZbbZbt-NEXT: cmov a0, a0, a2, a1 |
| ; RV32IZbbZbt-NEXT: ret |
| %a = mul i32 %y, %z |
| %tmp = call i32 @llvm.ssub.sat.i32(i32 %x, i32 %a) |
| ret i32 %tmp |
| } |
| |
| define i64 @func64(i64 %x, i64 %y, i64 %z) nounwind { |
| ; RV32I-LABEL: func64: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: mv a2, a1 |
| ; RV32I-NEXT: sltu a1, a0, a4 |
| ; RV32I-NEXT: sub a3, a2, a5 |
| ; RV32I-NEXT: sub a1, a3, a1 |
| ; RV32I-NEXT: xor a3, a2, a1 |
| ; RV32I-NEXT: xor a2, a2, a5 |
| ; RV32I-NEXT: and a2, a2, a3 |
| ; RV32I-NEXT: bltz a2, .LBB1_2 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: sub a0, a0, a4 |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB1_2: |
| ; RV32I-NEXT: srai a0, a1, 31 |
| ; RV32I-NEXT: lui a1, 524288 |
| ; RV32I-NEXT: xor a1, a0, a1 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func64: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: mv a1, a0 |
| ; RV64I-NEXT: sgtz a3, a2 |
| ; RV64I-NEXT: sub a0, a0, a2 |
| ; RV64I-NEXT: slt a1, a0, a1 |
| ; RV64I-NEXT: beq a3, a1, .LBB1_2 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: srai a0, a0, 63 |
| ; RV64I-NEXT: li a1, -1 |
| ; RV64I-NEXT: slli a1, a1, 63 |
| ; RV64I-NEXT: xor a0, a0, a1 |
| ; RV64I-NEXT: .LBB1_2: |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbbNOZbt-LABEL: func64: |
| ; RV32IZbbNOZbt: # %bb.0: |
| ; RV32IZbbNOZbt-NEXT: mv a2, a1 |
| ; RV32IZbbNOZbt-NEXT: sltu a1, a0, a4 |
| ; RV32IZbbNOZbt-NEXT: sub a3, a2, a5 |
| ; RV32IZbbNOZbt-NEXT: sub a1, a3, a1 |
| ; RV32IZbbNOZbt-NEXT: xor a3, a2, a1 |
| ; RV32IZbbNOZbt-NEXT: xor a2, a2, a5 |
| ; RV32IZbbNOZbt-NEXT: and a2, a2, a3 |
| ; RV32IZbbNOZbt-NEXT: bltz a2, .LBB1_2 |
| ; RV32IZbbNOZbt-NEXT: # %bb.1: |
| ; RV32IZbbNOZbt-NEXT: sub a0, a0, a4 |
| ; RV32IZbbNOZbt-NEXT: ret |
| ; RV32IZbbNOZbt-NEXT: .LBB1_2: |
| ; RV32IZbbNOZbt-NEXT: srai a0, a1, 31 |
| ; RV32IZbbNOZbt-NEXT: lui a1, 524288 |
| ; RV32IZbbNOZbt-NEXT: xor a1, a0, a1 |
| ; RV32IZbbNOZbt-NEXT: ret |
| ; |
| ; RV64IZbbNOZbt-LABEL: func64: |
| ; RV64IZbbNOZbt: # %bb.0: |
| ; RV64IZbbNOZbt-NEXT: mv a1, a0 |
| ; RV64IZbbNOZbt-NEXT: sgtz a3, a2 |
| ; RV64IZbbNOZbt-NEXT: sub a0, a0, a2 |
| ; RV64IZbbNOZbt-NEXT: slt a1, a0, a1 |
| ; RV64IZbbNOZbt-NEXT: beq a3, a1, .LBB1_2 |
| ; RV64IZbbNOZbt-NEXT: # %bb.1: |
| ; RV64IZbbNOZbt-NEXT: srai a0, a0, 63 |
| ; RV64IZbbNOZbt-NEXT: li a1, -1 |
| ; RV64IZbbNOZbt-NEXT: slli a1, a1, 63 |
| ; RV64IZbbNOZbt-NEXT: xor a0, a0, a1 |
| ; RV64IZbbNOZbt-NEXT: .LBB1_2: |
| ; RV64IZbbNOZbt-NEXT: ret |
| ; |
| ; RV32IZbbZbt-LABEL: func64: |
| ; RV32IZbbZbt: # %bb.0: |
| ; RV32IZbbZbt-NEXT: sltu a2, a0, a4 |
| ; RV32IZbbZbt-NEXT: sub a3, a1, a5 |
| ; RV32IZbbZbt-NEXT: sub a2, a3, a2 |
| ; RV32IZbbZbt-NEXT: srai a6, a2, 31 |
| ; RV32IZbbZbt-NEXT: lui a3, 524288 |
| ; RV32IZbbZbt-NEXT: xor a7, a6, a3 |
| ; RV32IZbbZbt-NEXT: xor a3, a1, a2 |
| ; RV32IZbbZbt-NEXT: xor a1, a1, a5 |
| ; RV32IZbbZbt-NEXT: and a1, a1, a3 |
| ; RV32IZbbZbt-NEXT: slti a3, a1, 0 |
| ; RV32IZbbZbt-NEXT: cmov a1, a3, a7, a2 |
| ; RV32IZbbZbt-NEXT: sub a0, a0, a4 |
| ; RV32IZbbZbt-NEXT: cmov a0, a3, a6, a0 |
| ; RV32IZbbZbt-NEXT: ret |
| ; |
| ; RV64IZbbZbt-LABEL: func64: |
| ; RV64IZbbZbt: # %bb.0: |
| ; RV64IZbbZbt-NEXT: sgtz a1, a2 |
| ; RV64IZbbZbt-NEXT: sub a2, a0, a2 |
| ; RV64IZbbZbt-NEXT: slt a0, a2, a0 |
| ; RV64IZbbZbt-NEXT: xor a0, a1, a0 |
| ; RV64IZbbZbt-NEXT: srai a1, a2, 63 |
| ; RV64IZbbZbt-NEXT: li a3, -1 |
| ; RV64IZbbZbt-NEXT: slli a3, a3, 63 |
| ; RV64IZbbZbt-NEXT: xor a1, a1, a3 |
| ; RV64IZbbZbt-NEXT: cmov a0, a0, a1, a2 |
| ; RV64IZbbZbt-NEXT: ret |
| %a = mul i64 %y, %z |
| %tmp = call i64 @llvm.ssub.sat.i64(i64 %x, i64 %z) |
| ret i64 %tmp |
| } |
| |
| define i16 @func16(i16 %x, i16 %y, i16 %z) nounwind { |
| ; RV32I-LABEL: func16: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a0, a0, 16 |
| ; RV32I-NEXT: srai a0, a0, 16 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: slli a1, a1, 16 |
| ; RV32I-NEXT: srai a1, a1, 16 |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: lui a1, 8 |
| ; RV32I-NEXT: addi a1, a1, -1 |
| ; RV32I-NEXT: bge a0, a1, .LBB2_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: lui a1, 1048568 |
| ; RV32I-NEXT: bge a1, a0, .LBB2_4 |
| ; RV32I-NEXT: .LBB2_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB2_3: |
| ; RV32I-NEXT: mv a0, a1 |
| ; RV32I-NEXT: lui a1, 1048568 |
| ; RV32I-NEXT: blt a1, a0, .LBB2_2 |
| ; RV32I-NEXT: .LBB2_4: |
| ; RV32I-NEXT: lui a0, 1048568 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func16: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 48 |
| ; RV64I-NEXT: srai a0, a0, 48 |
| ; RV64I-NEXT: mulw a1, a1, a2 |
| ; RV64I-NEXT: slli a1, a1, 48 |
| ; RV64I-NEXT: srai a1, a1, 48 |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: lui a1, 8 |
| ; RV64I-NEXT: addiw a1, a1, -1 |
| ; RV64I-NEXT: bge a0, a1, .LBB2_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: bge a1, a0, .LBB2_4 |
| ; RV64I-NEXT: .LBB2_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB2_3: |
| ; RV64I-NEXT: mv a0, a1 |
| ; RV64I-NEXT: lui a1, 1048568 |
| ; RV64I-NEXT: blt a1, a0, .LBB2_2 |
| ; RV64I-NEXT: .LBB2_4: |
| ; RV64I-NEXT: lui a0, 1048568 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func16: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sext.h a0, a0 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: sext.h a1, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: lui a1, 8 |
| ; RV32IZbb-NEXT: addi a1, a1, -1 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: lui a1, 1048568 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func16: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sext.h a0, a0 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: sext.h a1, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 8 |
| ; RV64IZbb-NEXT: addiw a1, a1, -1 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: lui a1, 1048568 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i16 %y, %z |
| %tmp = call i16 @llvm.ssub.sat.i16(i16 %x, i16 %a) |
| ret i16 %tmp |
| } |
| |
| define i8 @func8(i8 %x, i8 %y, i8 %z) nounwind { |
| ; RV32I-LABEL: func8: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a0, a0, 24 |
| ; RV32I-NEXT: srai a0, a0, 24 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: slli a1, a1, 24 |
| ; RV32I-NEXT: srai a1, a1, 24 |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: li a1, 127 |
| ; RV32I-NEXT: bge a0, a1, .LBB3_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: li a1, -128 |
| ; RV32I-NEXT: bge a1, a0, .LBB3_4 |
| ; RV32I-NEXT: .LBB3_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB3_3: |
| ; RV32I-NEXT: li a0, 127 |
| ; RV32I-NEXT: li a1, -128 |
| ; RV32I-NEXT: blt a1, a0, .LBB3_2 |
| ; RV32I-NEXT: .LBB3_4: |
| ; RV32I-NEXT: li a0, -128 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func8: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 56 |
| ; RV64I-NEXT: srai a0, a0, 56 |
| ; RV64I-NEXT: mulw a1, a1, a2 |
| ; RV64I-NEXT: slli a1, a1, 56 |
| ; RV64I-NEXT: srai a1, a1, 56 |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: li a1, 127 |
| ; RV64I-NEXT: bge a0, a1, .LBB3_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: li a1, -128 |
| ; RV64I-NEXT: bge a1, a0, .LBB3_4 |
| ; RV64I-NEXT: .LBB3_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB3_3: |
| ; RV64I-NEXT: li a0, 127 |
| ; RV64I-NEXT: li a1, -128 |
| ; RV64I-NEXT: blt a1, a0, .LBB3_2 |
| ; RV64I-NEXT: .LBB3_4: |
| ; RV64I-NEXT: li a0, -128 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func8: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: sext.b a0, a0 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: sext.b a1, a1 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: li a1, 127 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: li a1, -128 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func8: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: sext.b a0, a0 |
| ; RV64IZbb-NEXT: mul a1, a1, a2 |
| ; RV64IZbb-NEXT: sext.b a1, a1 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: li a1, 127 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: li a1, -128 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i8 %y, %z |
| %tmp = call i8 @llvm.ssub.sat.i8(i8 %x, i8 %a) |
| ret i8 %tmp |
| } |
| |
| define i4 @func4(i4 %x, i4 %y, i4 %z) nounwind { |
| ; RV32I-LABEL: func4: |
| ; RV32I: # %bb.0: |
| ; RV32I-NEXT: slli a0, a0, 28 |
| ; RV32I-NEXT: srai a0, a0, 28 |
| ; RV32I-NEXT: mul a1, a1, a2 |
| ; RV32I-NEXT: slli a1, a1, 28 |
| ; RV32I-NEXT: srai a1, a1, 28 |
| ; RV32I-NEXT: sub a0, a0, a1 |
| ; RV32I-NEXT: li a1, 7 |
| ; RV32I-NEXT: bge a0, a1, .LBB4_3 |
| ; RV32I-NEXT: # %bb.1: |
| ; RV32I-NEXT: li a1, -8 |
| ; RV32I-NEXT: bge a1, a0, .LBB4_4 |
| ; RV32I-NEXT: .LBB4_2: |
| ; RV32I-NEXT: ret |
| ; RV32I-NEXT: .LBB4_3: |
| ; RV32I-NEXT: li a0, 7 |
| ; RV32I-NEXT: li a1, -8 |
| ; RV32I-NEXT: blt a1, a0, .LBB4_2 |
| ; RV32I-NEXT: .LBB4_4: |
| ; RV32I-NEXT: li a0, -8 |
| ; RV32I-NEXT: ret |
| ; |
| ; RV64I-LABEL: func4: |
| ; RV64I: # %bb.0: |
| ; RV64I-NEXT: slli a0, a0, 60 |
| ; RV64I-NEXT: srai a0, a0, 60 |
| ; RV64I-NEXT: mulw a1, a1, a2 |
| ; RV64I-NEXT: slli a1, a1, 60 |
| ; RV64I-NEXT: srai a1, a1, 60 |
| ; RV64I-NEXT: sub a0, a0, a1 |
| ; RV64I-NEXT: li a1, 7 |
| ; RV64I-NEXT: bge a0, a1, .LBB4_3 |
| ; RV64I-NEXT: # %bb.1: |
| ; RV64I-NEXT: li a1, -8 |
| ; RV64I-NEXT: bge a1, a0, .LBB4_4 |
| ; RV64I-NEXT: .LBB4_2: |
| ; RV64I-NEXT: ret |
| ; RV64I-NEXT: .LBB4_3: |
| ; RV64I-NEXT: li a0, 7 |
| ; RV64I-NEXT: li a1, -8 |
| ; RV64I-NEXT: blt a1, a0, .LBB4_2 |
| ; RV64I-NEXT: .LBB4_4: |
| ; RV64I-NEXT: li a0, -8 |
| ; RV64I-NEXT: ret |
| ; |
| ; RV32IZbb-LABEL: func4: |
| ; RV32IZbb: # %bb.0: |
| ; RV32IZbb-NEXT: slli a0, a0, 28 |
| ; RV32IZbb-NEXT: srai a0, a0, 28 |
| ; RV32IZbb-NEXT: mul a1, a1, a2 |
| ; RV32IZbb-NEXT: slli a1, a1, 28 |
| ; RV32IZbb-NEXT: srai a1, a1, 28 |
| ; RV32IZbb-NEXT: sub a0, a0, a1 |
| ; RV32IZbb-NEXT: li a1, 7 |
| ; RV32IZbb-NEXT: min a0, a0, a1 |
| ; RV32IZbb-NEXT: li a1, -8 |
| ; RV32IZbb-NEXT: max a0, a0, a1 |
| ; RV32IZbb-NEXT: ret |
| ; |
| ; RV64IZbb-LABEL: func4: |
| ; RV64IZbb: # %bb.0: |
| ; RV64IZbb-NEXT: slli a0, a0, 60 |
| ; RV64IZbb-NEXT: srai a0, a0, 60 |
| ; RV64IZbb-NEXT: mulw a1, a1, a2 |
| ; RV64IZbb-NEXT: slli a1, a1, 60 |
| ; RV64IZbb-NEXT: srai a1, a1, 60 |
| ; RV64IZbb-NEXT: sub a0, a0, a1 |
| ; RV64IZbb-NEXT: li a1, 7 |
| ; RV64IZbb-NEXT: min a0, a0, a1 |
| ; RV64IZbb-NEXT: li a1, -8 |
| ; RV64IZbb-NEXT: max a0, a0, a1 |
| ; RV64IZbb-NEXT: ret |
| %a = mul i4 %y, %z |
| %tmp = call i4 @llvm.ssub.sat.i4(i4 %x, i4 %a) |
| ret i4 %tmp |
| } |
