mirror of
https://github.com/c64scene-ar/llvm-6502.git
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328bc2f89e
Summary: This patch enables code generation for the MIPS II target. Pre-Mips32 targets don't have the MUL instruction, so we add the correspondent pattern that uses the MULT/MFLO combination in order to retrieve the product. This is WIP as we don't support code generation for select nodes due to the lack of conditional-move instructions. Reviewers: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D6150 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221686 91177308-0d34-0410-b5e6-96231b3b80d8
182 lines
5.3 KiB
LLVM
182 lines
5.3 KiB
LLVM
; RUN: llc < %s -march=mips -mcpu=mips2 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=M2
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; RUN: llc < %s -march=mips -mcpu=mips32 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R1-R2 -check-prefix=32R1
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; RUN: llc < %s -march=mips -mcpu=mips32r2 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R1-R2 -check-prefix=32R2
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; RUN: llc < %s -march=mips -mcpu=mips32r6 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=32R6
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; RUN: llc < %s -march=mips64 -mcpu=mips4 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=M4
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; RUN: llc < %s -march=mips64 -mcpu=mips64 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=64R1-R2
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; RUN: llc < %s -march=mips64 -mcpu=mips64r2 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=64R1-R2
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; RUN: llc < %s -march=mips64 -mcpu=mips64r6 | FileCheck %s \
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; RUN: -check-prefix=ALL -check-prefix=64R6
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define signext i1 @mul_i1(i1 signext %a, i1 signext %b) {
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entry:
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; ALL-LABEL: mul_i1:
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; M2: mult $4, $5
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; M2: mflo $[[T0:[0-9]+]]
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; M2: sll $[[T0]], $[[T0]], 31
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; M2: sra $2, $[[T0]], 31
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; 32R1-R2: mul $[[T0:[0-9]+]], $4, $5
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; 32R1-R2: sll $[[T0]], $[[T0]], 31
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; 32R1-R2: sra $2, $[[T0]], 31
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; 32R6: mul $[[T0:[0-9]+]], $4, $5
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; 32R6: sll $[[T0]], $[[T0]], 31
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; 32R6: sra $2, $[[T0]], 31
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; M4: mult $4, $5
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; M4: mflo $[[T0:[0-9]+]]
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; M4: sll $[[T0]], $[[T0]], 31
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; M4: sra $2, $[[T0]], 31
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; 64R1-R2: mul $[[T0:[0-9]+]], $4, $5
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; 64R1-R2: sll $[[T0]], $[[T0]], 31
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; 64R1-R2: sra $2, $[[T0]], 31
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; 64R6: mul $[[T0:[0-9]+]], $4, $5
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; 64R6: sll $[[T0]], $[[T0]], 31
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; 64R6: sra $2, $[[T0]], 31
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%r = mul i1 %a, %b
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ret i1 %r
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}
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define signext i8 @mul_i8(i8 signext %a, i8 signext %b) {
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entry:
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; ALL-LABEL: mul_i8:
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; M2: mult $4, $5
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; M2: mflo $[[T0:[0-9]+]]
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; M2: sll $[[T0]], $[[T0]], 24
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; M2: sra $2, $[[T0]], 24
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; 32R1: mul $[[T0:[0-9]+]], $4, $5
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; 32R1: sll $[[T0]], $[[T0]], 24
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; 32R1: sra $2, $[[T0]], 24
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; 32R2: mul $[[T0:[0-9]+]], $4, $5
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; 32R2: seb $2, $[[T0]]
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; 32R6: mul $[[T0:[0-9]+]], $4, $5
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; 32R6: seb $2, $[[T0]]
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; M4: mult $4, $5
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; M4: mflo $[[T0:[0-9]+]]
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; M4: sll $[[T0]], $[[T0]], 24
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; M4: sra $2, $[[T0]], 24
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; 64R1: mul $[[T0:[0-9]+]], $4, $5
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; 64R1: sll $[[T0]], $[[T0]], 24
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; 64R1: sra $2, $[[T0]], 24
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; 64R2: mul $[[T0:[0-9]+]], $4, $5
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; 64R2: seb $2, $[[T0]]
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; 64R6: mul $[[T0:[0-9]+]], $4, $5
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; 64R6: seb $2, $[[T0]]
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%r = mul i8 %a, %b
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ret i8 %r
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}
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define signext i16 @mul_i16(i16 signext %a, i16 signext %b) {
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entry:
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; ALL-LABEL: mul_i16:
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; M2: mult $4, $5
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; M2: mflo $[[T0:[0-9]+]]
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; M2: sll $[[T0]], $[[T0]], 16
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; M2: sra $2, $[[T0]], 16
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; 32R1: mul $[[T0:[0-9]+]], $4, $5
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; 32R1: sll $[[T0]], $[[T0]], 16
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; 32R1: sra $2, $[[T0]], 16
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; 32R2: mul $[[T0:[0-9]+]], $4, $5
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; 32R2: seh $2, $[[T0]]
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; 32R6: mul $[[T0:[0-9]+]], $4, $5
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; 32R6: seh $2, $[[T0]]
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; M4: mult $4, $5
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; M4: mflo $[[T0:[0-9]+]]
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; M4: sll $[[T0]], $[[T0]], 16
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; M4: sra $2, $[[T0]], 16
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; 64R1: mul $[[T0:[0-9]+]], $4, $5
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; 64R1: sll $[[T0]], $[[T0]], 16
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; 64R1: sra $2, $[[T0]], 16
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; 64R2: mul $[[T0:[0-9]+]], $4, $5
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; 64R2: seh $2, $[[T0]]
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; 64R6: mul $[[T0:[0-9]+]], $4, $5
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; 64R6: seh $2, $[[T0]]
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%r = mul i16 %a, %b
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ret i16 %r
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}
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define signext i32 @mul_i32(i32 signext %a, i32 signext %b) {
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entry:
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; ALL-LABEL: mul_i32:
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; M2: mult $4, $5
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; M2: mflo $2
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; 32R1-R2: mul $2, $4, $5
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; 32R6: mul $2, $4, $5
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; 64R1-R2: mul $2, $4, $5
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; 64R6: mul $2, $4, $5
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%r = mul i32 %a, %b
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ret i32 %r
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}
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define signext i64 @mul_i64(i64 signext %a, i64 signext %b) {
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entry:
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; ALL-LABEL: mul_i64:
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; M2: mult $4, $7
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; M2: mflo $[[T0:[0-9]+]]
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; M2: mult $5, $6
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; M2: mflo $[[T1:[0-9]+]]
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; M2: multu $5, $7
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; M2: mflo $3
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; M2: mfhi $4
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; M2: addu $[[T2:[0-9]+]], $4, $[[T1]]
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; M2: addu $2, $[[T2]], $[[T0]]
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; 32R1-R2: multu $5, $7
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; 32R1-R2: mflo $3
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; 32R1-R2: mfhi $[[T0:[0-9]+]]
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; 32R1-R2: mul $[[T1:[0-9]+]], $4, $7
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; 32R1-R2: mul $[[T2:[0-9]+]], $5, $6
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; 32R1-R2: addu $[[T0]], $[[T0]], $[[T2:[0-9]+]]
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; 32R1-R2: addu $2, $[[T0]], $[[T1]]
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; 32R6: mul $[[T0:[0-9]+]], $5, $6
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; 32R6: muhu $[[T1:[0-9]+]], $5, $7
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; 32R6: addu $[[T0]], $[[T1]], $[[T0]]
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; 32R6: mul $[[T2:[0-9]+]], $4, $7
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; 32R6: addu $2, $[[T0]], $[[T2]]
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; 32R6: mul $3, $5, $7
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; M4: dmult $4, $5
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; M4: mflo $2
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; 64R1-R2: dmult $4, $5
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; 64R1-R2: mflo $2
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; 64R6: dmul $2, $4, $5
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%r = mul i64 %a, %b
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ret i64 %r
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}
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