2019-09-16 04:02:25 +08:00
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 | FileCheck %s
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2020-06-14 22:58:22 +08:00
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define dso_local float @foo_nosw(float %0, float %1) local_unnamed_addr {
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; CHECK-LABEL: foo_nosw:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xsdivsp 1, 1, 2
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; CHECK-NEXT: blr
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%3 = fdiv reassoc arcp nsz float %0, %1
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ret float %3
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}
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2019-09-16 04:02:25 +08:00
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define dso_local float @foo(float %0, float %1) local_unnamed_addr {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xsresp 3, 2
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; CHECK-NEXT: xsmulsp 0, 1, 3
|
[PowerPC] Add missing pattern for VSX Scalar Negative Multiply-Subtract Single Precision
Summary:
This was found during review of https://reviews.llvm.org/D66050.
In the simple test of fdiv, we miss to fold
```
fneg 2, 2
xsmaddasp 3, 2, 0
```
to
```
xsnmsubasp 3, 2, 0
```
We have the patterns for Double Precision and vectors, just missing
Single Precision, the patch add that.
Reviewers: #powerpc, hfinkel, nemanjai, steven.zhang
Reviewed By: #powerpc, steven.zhang
Subscribers: wuzish, hiraditya, kbarton, MaskRay, shchenz, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D67595
llvm-svn: 372985
2019-09-26 23:11:33 +08:00
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|
; CHECK-NEXT: xsnmsubasp 1, 2, 0
|
2019-09-16 04:02:25 +08:00
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|
; CHECK-NEXT: xsmaddasp 0, 3, 1
|
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; CHECK-NEXT: fmr 1, 0
|
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|
; CHECK-NEXT: blr
|
2020-06-14 22:58:22 +08:00
|
|
|
%3 = fdiv reassoc arcp nsz ninf float %0, %1
|
2019-09-16 04:02:25 +08:00
|
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|
ret float %3
|
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|
}
|