maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/PowerPC/pr39478.ll

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

31 lines
1.0 KiB
LLVM
Raw Normal View History

[PowerPC] Don't combine to bswap store on 1-byte truncating store Turns out that there was no check for a store that truncates down to a single byte when combining a (store (bswap...)) into a byte-swapping store. This patch just adds that check. Fixes https://bugs.llvm.org/show_bug.cgi?id=39478. llvm-svn: 347288
2018-11-20 12:42:31 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
; RUN: llc < %s -mtriple=powerpc64le-unknown-unknown -verify-machineinstrs | FileCheck %s --check-prefix=CHECKLE
; RUN: llc < %s -mtriple=powerpc64-unknown-unknown -verify-machineinstrs | FileCheck %s --check-prefix=CHECKBE
[PowerPC] Don't combine to bswap store on 1-byte truncating store Turns out that there was no check for a store that truncates down to a single byte when combining a (store (bswap...)) into a byte-swapping store. This patch just adds that check. Fixes https://bugs.llvm.org/show_bug.cgi?id=39478. llvm-svn: 347288
2018-11-20 12:42:31 +08:00
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
define void @pr39478(i64* %p64, i32* %p32) {
; CHECKLE-LABEL: pr39478:
; CHECKLE: # %bb.0: # %entry
[DAGCombine] Prune unnused nodes. Summary: Nodes that have no uses are eventually pruned when they are selected from the worklist. Record nodes newly added to the worklist or DAG and perform pruning after every combine attempt. Reviewers: efriedma, RKSimon, craig.topper, spatel, jyknight Reviewed By: jyknight Subscribers: jdoerfert, jyknight, nemanjai, jvesely, nhaehnle, javed.absar, hiraditya, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D58070 llvm-svn: 357283
2019-03-30 01:35:56 +08:00
; CHECKLE-NEXT: lbz 3, 4(3)
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
; CHECKLE-NEXT: stb 3, 0(4)
; CHECKLE-NEXT: blr
;
; CHECKBE-LABEL: pr39478:
; CHECKBE: # %bb.0: # %entry
[DAGCombine] Prune unnused nodes. Summary: Nodes that have no uses are eventually pruned when they are selected from the worklist. Record nodes newly added to the worklist or DAG and perform pruning after every combine attempt. Reviewers: efriedma, RKSimon, craig.topper, spatel, jyknight Reviewed By: jyknight Subscribers: jdoerfert, jyknight, nemanjai, jvesely, nhaehnle, javed.absar, hiraditya, jsji, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D58070 llvm-svn: 357283
2019-03-30 01:35:56 +08:00
; CHECKBE-NEXT: lbz 3, 3(3)
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
; CHECKBE-NEXT: stb 3, 3(4)
; CHECKBE-NEXT: blr
[PowerPC] Don't combine to bswap store on 1-byte truncating store Turns out that there was no check for a store that truncates down to a single byte when combining a (store (bswap...)) into a byte-swapping store. This patch just adds that check. Fixes https://bugs.llvm.org/show_bug.cgi?id=39478. llvm-svn: 347288
2018-11-20 12:42:31 +08:00
entry:
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
%tmp32 = load i64, i64* %p64, align 8
%tmp33 = load i32, i32* %p32, align 4
[PowerPC] Don't combine to bswap store on 1-byte truncating store Turns out that there was no check for a store that truncates down to a single byte when combining a (store (bswap...)) into a byte-swapping store. This patch just adds that check. Fixes https://bugs.llvm.org/show_bug.cgi?id=39478. llvm-svn: 347288
2018-11-20 12:42:31 +08:00
%tmp34 = and i32 %tmp33, -256
%tmp35 = lshr i64 %tmp32, 32
%tmp36 = shl nuw nsw i64 %tmp35, 24
%tmp37 = trunc i64 %tmp36 to i32
%tmp38 = call i32 @llvm.bswap.i32(i32 %tmp37)
%tmp39 = or i32 %tmp38, %tmp34
[PowerPC] Use real pointers instead of undef The reduced test removed the pointer arguments, but to better survive D58017 and D58070 we need them back. llvm-svn: 355532
2019-03-07 02:49:39 +08:00
store i32 %tmp39, i32* %p32, align 4
[PowerPC] Don't combine to bswap store on 1-byte truncating store Turns out that there was no check for a store that truncates down to a single byte when combining a (store (bswap...)) into a byte-swapping store. This patch just adds that check. Fixes https://bugs.llvm.org/show_bug.cgi?id=39478. llvm-svn: 347288
2018-11-20 12:42:31 +08:00
ret void
}
declare i32 @llvm.bswap.i32(i32)