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[NFC][PowerPC]Add tests for multiply-by-constant.

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This commit is contained in:
Esme-Yi 2020-09-22 10:25:02 +00:00
parent ddb177aa83
commit c952b1959c
1 changed files with 62 additions and 1 deletions
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63
test/CodeGen/PowerPC/mulli.ll
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@ -1,4 +1,4 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --extra_scrub
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
define i64 @test1(i64 %x) {
@ -68,3 +68,64 @@ define i64 @test6(i64 %x) {
%y = mul i64 %x, -4294971392
ret i64 %y
}
define i64 @test7(i64 %x) {
; CHECK-LABEL: test7:
; CHECK: # %bb.0:
; CHECK-NEXT: lis 4, 31
; CHECK-NEXT: ori 4, 4, 65535
; CHECK-NEXT: sldi 4, 4, 13
; CHECK-NEXT: mulld 3, 3, 4
; CHECK-NEXT: blr
%y = mul i64 %x, 17179860992
ret i64 %y
}
define i64 @test8(i64 %x) {
; CHECK-LABEL: test8:
; CHECK: # %bb.0:
; CHECK-NEXT: li 4, -4
; CHECK-NEXT: sldi 4, 4, 32
; CHECK-NEXT: ori 4, 4, 8192
; CHECK-NEXT: mulld 3, 3, 4
; CHECK-NEXT: blr
%y = mul i64 %x, -17179860992
ret i64 %y
}
define i64 @test9(i64 %x) {
; CHECK-LABEL: test9:
; CHECK: # %bb.0:
; CHECK-NEXT: lis 4, 16
; CHECK-NEXT: li 5, 8193
; CHECK-NEXT: ori 4, 4, 1
; CHECK-NEXT: sldi 5, 5, 19
; CHECK-NEXT: sldi 4, 4, 12
; CHECK-NEXT: mulld 4, 3, 4
; CHECK-NEXT: mulld 3, 3, 5
; CHECK-NEXT: sub 3, 4, 3
; CHECK-NEXT: blr
%y = mul i64 %x, 4294971392
%z = mul i64 %x, 4295491584
%res = sub i64 %y, %z
ret i64 %res
}
define i64 @test10(i64 %x) {
; CHECK-LABEL: test10:
; CHECK: # %bb.0:
; CHECK-NEXT: lis 4, 31
; CHECK-NEXT: lis 5, 16383
; CHECK-NEXT: ori 4, 4, 65535
; CHECK-NEXT: ori 5, 5, 57344
; CHECK-NEXT: sldi 4, 4, 13
; CHECK-NEXT: mulld 4, 3, 4
; CHECK-NEXT: mulld 3, 3, 5
; CHECK-NEXT: sub 3, 4, 3
; CHECK-NEXT: blr
%y = mul i64 %x, 17179860992
%z = mul i64 %x, 1073733632
%res = sub i64 %y, %z
ret i64 %res
}