6e0ad5bc8c
Summary: This patch try to do the following transformation if the multiplier doen't fit int16: (mul X, c1 << c2) -> (rldicr (mulli X, c1) c2) Reviewed By: jsji, steven.zhang Differential Revision: https://reviews.llvm.org/D87384
118 lines
2.6 KiB
LLVM
118 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
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define i64 @test1(i64 %x) {
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; CHECK-LABEL: test1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulli 3, 3, 625
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; CHECK-NEXT: sldi 3, 3, 36
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; CHECK-NEXT: blr
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%y = mul i64 %x, 42949672960000
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ret i64 %y
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}
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define i64 @test2(i64 %x) {
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; CHECK-LABEL: test2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulli 3, 3, -625
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; CHECK-NEXT: sldi 3, 3, 36
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; CHECK-NEXT: blr
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%y = mul i64 %x, -42949672960000
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ret i64 %y
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}
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define i64 @test3(i64 %x) {
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; CHECK-LABEL: test3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulli 3, 3, 297
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; CHECK-NEXT: sldi 3, 3, 14
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; CHECK-NEXT: blr
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%y = mul i64 %x, 4866048
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ret i64 %y
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}
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define i64 @test4(i64 %x) {
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; CHECK-LABEL: test4:
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; CHECK: # %bb.0:
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; CHECK-NEXT: mulli 3, 3, -297
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; CHECK-NEXT: sldi 3, 3, 14
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; CHECK-NEXT: blr
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%y = mul i64 %x, -4866048
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ret i64 %y
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}
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define i64 @test5(i64 %x) {
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; CHECK-LABEL: test5:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 12
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; CHECK-NEXT: sldi 3, 3, 32
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; CHECK-NEXT: add 3, 3, 4
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; CHECK-NEXT: blr
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%y = mul i64 %x, 4294971392
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ret i64 %y
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}
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define i64 @test6(i64 %x) {
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; CHECK-LABEL: test6:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 12
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; CHECK-NEXT: sldi 3, 3, 32
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; CHECK-NEXT: add 3, 3, 4
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; CHECK-NEXT: neg 3, 3
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; CHECK-NEXT: blr
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%y = mul i64 %x, -4294971392
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ret i64 %y
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}
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define i64 @test7(i64 %x) {
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; CHECK-LABEL: test7:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 34
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; CHECK-NEXT: sldi 3, 3, 13
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; CHECK-NEXT: sub 3, 4, 3
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; CHECK-NEXT: blr
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%y = mul i64 %x, 17179860992
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ret i64 %y
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}
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define i64 @test8(i64 %x) {
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; CHECK-LABEL: test8:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 13
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; CHECK-NEXT: sldi 3, 3, 34
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; CHECK-NEXT: sub 3, 4, 3
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; CHECK-NEXT: blr
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%y = mul i64 %x, -17179860992
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ret i64 %y
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}
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define i64 @test9(i64 %x) {
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; CHECK-LABEL: test9:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 12
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; CHECK-NEXT: sldi 5, 3, 32
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; CHECK-NEXT: add 4, 5, 4
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; CHECK-NEXT: mulli 3, 3, 8193
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; CHECK-NEXT: sldi 3, 3, 19
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; CHECK-NEXT: sub 3, 4, 3
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; CHECK-NEXT: blr
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%y = mul i64 %x, 4294971392
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%z = mul i64 %x, 4295491584
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%res = sub i64 %y, %z
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ret i64 %res
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}
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define i64 @test10(i64 %x) {
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; CHECK-LABEL: test10:
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; CHECK: # %bb.0:
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; CHECK-NEXT: sldi 4, 3, 34
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; CHECK-NEXT: sldi 3, 3, 30
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; CHECK-NEXT: sub 3, 4, 3
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; CHECK-NEXT: blr
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%y = mul i64 %x, 17179860992
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%z = mul i64 %x, 1073733632
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%res = sub i64 %y, %z
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ret i64 %res
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}
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