maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[NFC] [PowerPC] Refresh fma-mutate.ll using script 

This is a clean-up after D78989. The old comments are out of date.
This commit is contained in:
Qiu Chaofan 2020-05-19 13:37:25 +08:00
parent eec758825d
commit ad4f196e25
1 changed files with 33 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
llvm/test/CodeGen/PowerPC/fma-mutate.ll
View File

@ -1,27 +1,46 @@
; Test several VSX FMA mutation opportunities. The first one isn't a
; reasonable transformation because the killed product register is the
; same as the FMA target register. The second one is legal. The third
; one doesn't fit the feeding-copy pattern.
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=+vsx -disable-ppc-vsx-fma-mutation=false | FileCheck %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
declare double @llvm.sqrt.f64(double)
; Test several VSX FMA mutation opportunities.
; This is reasonable transformation since it eliminates extra register copy.
define double @foo3_fmf(double %a) nounwind {
; CHECK: @foo3_fmf
; CHECK-NOT: fmr
; CHECK: xsmaddmdp
; CHECK: xsmaddadp
; CHECK-LABEL: foo3_fmf:
; CHECK: # %bb.0:
; CHECK-NEXT: xsabsdp 0, 1
; CHECK-NEXT: addis 3, 2, .LCPI0_2@toc@ha
; CHECK-NEXT: lfd 2, .LCPI0_2@toc@l(3)
; CHECK-NEXT: xscmpudp 0, 0, 2
; CHECK-NEXT: xxlxor 0, 0, 0
; CHECK-NEXT: blt 0, .LBB0_2
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: xsrsqrtedp 0, 1
; CHECK-NEXT: addis 3, 2, .LCPI0_0@toc@ha
; CHECK-NEXT: lfs 3, .LCPI0_0@toc@l(3)
; CHECK-NEXT: addis 3, 2, .LCPI0_1@toc@ha
; CHECK-NEXT: lfs 4, .LCPI0_1@toc@l(3)
; CHECK-NEXT: xsmuldp 2, 1, 0
; CHECK-NEXT: xsmaddmdp 2, 0, 3
; CHECK-NEXT: xsmuldp 0, 0, 4
; CHECK-NEXT: xsmuldp 0, 0, 2
; CHECK-NEXT: xsmuldp 1, 1, 0
; CHECK-NEXT: xsmaddadp 3, 1, 0
; CHECK-NEXT: xsmuldp 0, 1, 4
; CHECK-NEXT: xsmuldp 0, 0, 3
; CHECK-NEXT: .LBB0_2:
; CHECK-NEXT: fmr 1, 0
; CHECK-NEXT: blr
%r = call reassoc afn ninf double @llvm.sqrt.f64(double %a)
ret double %r
}
define double @foo3_safe(double %a) nounwind {
; CHECK: @foo3_safe
; CHECK-NOT: fmr
; CHECK: xssqrtdp
; CHECK-LABEL: foo3_safe:
; CHECK: # %bb.0:
; CHECK-NEXT: xssqrtdp 1, 1
; CHECK-NEXT: blr
%r = call double @llvm.sqrt.f64(double %a)
ret double %r
}