6599961c17
This patch contains following enhancements to SrcRegMap and DstRegMap:
1 In findOnlyInterestingUse not only check if the Reg is two address usage,
but also check after commutation can it be two address usage.
2 If a physical register is clobbered, remove SrcRegMap entries that are
mapped to it.
3 In processTiedPairs, when create a new COPY instruction, add a SrcRegMap
entry only when the COPY instruction is coalescable. (The COPY src is
killed)
With these enhancements isProfitableToCommute can do better commute decision,
and finally more register copies are removed.
Differential Revision: https://reviews.llvm.org/D108731
485 lines
12 KiB
LLVM
485 lines
12 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s --check-prefix=X64
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define i8 @test_mul_by_1(i8 %x) {
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; X64-LABEL: test_mul_by_1:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 1
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ret i8 %m
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}
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define i8 @test_mul_by_2(i8 %x) {
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; X64-LABEL: test_mul_by_2:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 2
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ret i8 %m
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}
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define i8 @test_mul_by_3(i8 %x) {
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; X64-LABEL: test_mul_by_3:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 3
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ret i8 %m
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}
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define i8 @test_mul_by_4(i8 %x) {
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; X64-LABEL: test_mul_by_4:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (,%rdi,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 4
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ret i8 %m
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}
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define i8 @test_mul_by_5(i8 %x) {
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; X64-LABEL: test_mul_by_5:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 5
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ret i8 %m
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}
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define i8 @test_mul_by_6(i8 %x) {
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; X64-LABEL: test_mul_by_6:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: addl %edi, %edi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 6
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ret i8 %m
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}
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define i8 @test_mul_by_7(i8 %x) {
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; X64-LABEL: test_mul_by_7:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (,%rdi,8), %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 7
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ret i8 %m
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}
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define i8 @test_mul_by_8(i8 %x) {
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; X64-LABEL: test_mul_by_8:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (,%rdi,8), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 8
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ret i8 %m
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}
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define i8 @test_mul_by_9(i8 %x) {
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; X64-LABEL: test_mul_by_9:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 9
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ret i8 %m
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}
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define i8 @test_mul_by_10(i8 %x) {
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; X64-LABEL: test_mul_by_10:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: addl %edi, %edi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 10
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ret i8 %m
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}
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define i8 @test_mul_by_11(i8 %x) {
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; X64-LABEL: test_mul_by_11:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rdi,%rax,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 11
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ret i8 %m
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}
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define i8 @test_mul_by_12(i8 %x) {
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; X64-LABEL: test_mul_by_12:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: shll $2, %edi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 12
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ret i8 %m
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}
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define i8 @test_mul_by_13(i8 %x) {
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; X64-LABEL: test_mul_by_13:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 13
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ret i8 %m
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}
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define i8 @test_mul_by_14(i8 %x) {
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; X64-LABEL: test_mul_by_14:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $4, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 14
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ret i8 %m
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}
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define i8 @test_mul_by_15(i8 %x) {
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; X64-LABEL: test_mul_by_15:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rax,%rax,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 15
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ret i8 %m
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}
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define i8 @test_mul_by_16(i8 %x) {
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; X64-LABEL: test_mul_by_16:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shlb $4, %al
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 16
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ret i8 %m
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}
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define i8 @test_mul_by_17(i8 %x) {
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; X64-LABEL: test_mul_by_17:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $4, %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 17
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ret i8 %m
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}
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define i8 @test_mul_by_18(i8 %x) {
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; X64-LABEL: test_mul_by_18:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: addl %edi, %edi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 18
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ret i8 %m
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}
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define i8 @test_mul_by_19(i8 %x) {
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; X64-LABEL: test_mul_by_19:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: leal (%rdi,%rax,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 19
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ret i8 %m
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}
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define i8 @test_mul_by_20(i8 %x) {
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; X64-LABEL: test_mul_by_20:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: shll $2, %edi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 20
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ret i8 %m
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}
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define i8 @test_mul_by_21(i8 %x) {
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; X64-LABEL: test_mul_by_21:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 21
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ret i8 %m
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}
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define i8 @test_mul_by_22(i8 %x) {
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; X64-LABEL: test_mul_by_22:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 22
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ret i8 %m
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}
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define i8 @test_mul_by_23(i8 %x) {
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; X64-LABEL: test_mul_by_23:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: shll $3, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 23
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ret i8 %m
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}
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define i8 @test_mul_by_24(i8 %x) {
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; X64-LABEL: test_mul_by_24:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: shll $3, %edi
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; X64-NEXT: leal (%rdi,%rdi,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 24
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ret i8 %m
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}
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define i8 @test_mul_by_25(i8 %x) {
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; X64-LABEL: test_mul_by_25:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rax,%rax,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 25
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ret i8 %m
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}
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define i8 @test_mul_by_26(i8 %x) {
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; X64-LABEL: test_mul_by_26:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rax,%rax,4), %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 26
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ret i8 %m
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}
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define i8 @test_mul_by_27(i8 %x) {
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; X64-LABEL: test_mul_by_27:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: leal (%rax,%rax,2), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 27
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ret i8 %m
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}
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define i8 @test_mul_by_28(i8 %x) {
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; X64-LABEL: test_mul_by_28:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: leal (%rax,%rax,2), %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 28
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ret i8 %m
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}
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define i8 @test_mul_by_29(i8 %x) {
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; X64-LABEL: test_mul_by_29:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: leal (%rax,%rax,2), %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: addl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 29
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ret i8 %m
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}
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define i8 @test_mul_by_30(i8 %x) {
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; X64-LABEL: test_mul_by_30:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $5, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 30
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ret i8 %m
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}
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define i8 @test_mul_by_31(i8 %x) {
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; X64-LABEL: test_mul_by_31:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $5, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 31
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ret i8 %m
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}
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define i8 @test_mul_by_32(i8 %x) {
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; X64-LABEL: test_mul_by_32:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shlb $5, %al
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 32
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ret i8 %m
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}
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define i8 @test_mul_by_37(i8 %x) {
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; X64-LABEL: test_mul_by_37:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,8), %eax
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; X64-NEXT: leal (%rdi,%rax,4), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 37
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ret i8 %m
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}
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define i8 @test_mul_by_41(i8 %x) {
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; X64-LABEL: test_mul_by_41:
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; X64: # %bb.0:
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; X64-NEXT: # kill: def $edi killed $edi def $rdi
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; X64-NEXT: leal (%rdi,%rdi,4), %eax
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; X64-NEXT: leal (%rdi,%rax,8), %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
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; X64-NEXT: retq
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%m = mul i8 %x, 41
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ret i8 %m
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}
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define i8 @test_mul_by_62(i8 %x) {
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; X64-LABEL: test_mul_by_62:
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; X64: # %bb.0:
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; X64-NEXT: movl %edi, %eax
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; X64-NEXT: shll $6, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: subl %edi, %eax
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; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, 62
|
|
ret i8 %m
|
|
}
|
|
|
|
define i8 @test_mul_by_66(i8 %x) {
|
|
; X64-LABEL: test_mul_by_66:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: movl %edi, %eax
|
|
; X64-NEXT: shll $6, %eax
|
|
; X64-NEXT: leal (%rax,%rdi,2), %eax
|
|
; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, 66
|
|
ret i8 %m
|
|
}
|
|
|
|
define i8 @test_mul_by_73(i8 %x) {
|
|
; X64-LABEL: test_mul_by_73:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: leal (%rdi,%rdi,8), %eax
|
|
; X64-NEXT: leal (%rdi,%rax,8), %eax
|
|
; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, 73
|
|
ret i8 %m
|
|
}
|
|
|
|
define i8 @test_mul_by_520(i8 %x) {
|
|
; X64-LABEL: test_mul_by_520:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: leal (,%rdi,8), %eax
|
|
; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, 520
|
|
ret i8 %m
|
|
}
|
|
|
|
define i8 @test_mul_by_neg10(i8 %x) {
|
|
; X64-LABEL: test_mul_by_neg10:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: addl %edi, %edi
|
|
; X64-NEXT: leal (%rdi,%rdi,4), %eax
|
|
; X64-NEXT: negl %eax
|
|
; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, -10
|
|
ret i8 %m
|
|
}
|
|
|
|
define i8 @test_mul_by_neg36(i8 %x) {
|
|
; X64-LABEL: test_mul_by_neg36:
|
|
; X64: # %bb.0:
|
|
; X64-NEXT: # kill: def $edi killed $edi def $rdi
|
|
; X64-NEXT: shll $2, %edi
|
|
; X64-NEXT: leal (%rdi,%rdi,8), %eax
|
|
; X64-NEXT: negl %eax
|
|
; X64-NEXT: # kill: def $al killed $al killed $eax
|
|
; X64-NEXT: retq
|
|
%m = mul i8 %x, -36
|
|
ret i8 %m
|
|
}
|
|
|