llvm-mirror/test/CodeGen/AArch64/arm64-storebytesmerge.ll
Nirav Dave d42b05387d [ARM][AArch64][DAG] Reenable post-legalize store merge
Reenable post-legalize stores with constant merging computation and
corresponding test case.

 * Properly truncate store merge constants
 * Disable merging of truncated stores floating points
 * Ensure merges of constant stores into a single vector are
   constructed from legal elements.

Reviewers: eastig, efriedma

Reviewed By: eastig

Subscribers: spatel, rengolin, aemerson, javed.absar, kristof.beyls, hiraditya, llvm-commits

Differential Revision: https://reviews.llvm.org/D40701

llvm-svn: 319899
2017-12-06 15:30:13 +00:00

47 lines
2.3 KiB
LLVM

; RUN: llc -mtriple=aarch64-linux-gnu -enable-misched=false < %s | FileCheck %s
;target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
;target triple = "aarch64--linux-gnu"
; CHECK-LABEL: test
; CHECK: str x30, [sp, #-16]!
; CHECK: adrp x8, q
; CHECK: ldr x8, [x8, :lo12:q]
; CHECK: stp xzr, xzr, [x8]
; CHECK: bl f
@q = external unnamed_addr global i16*, align 8
; Function Attrs: nounwind
define void @test() local_unnamed_addr #0 {
entry:
br label %for.body453.i
for.body453.i: ; preds = %for.body453.i, %entry
br i1 undef, label %for.body453.i, label %for.end705.i
for.end705.i: ; preds = %for.body453.i
%0 = load i16*, i16** @q, align 8
%1 = getelementptr inbounds i16, i16* %0, i64 0
%2 = bitcast i16* %1 to <2 x i16>*
store <2 x i16> zeroinitializer, <2 x i16>* %2, align 2
%3 = getelementptr i16, i16* %1, i64 2
%4 = bitcast i16* %3 to <2 x i16>*
store <2 x i16> zeroinitializer, <2 x i16>* %4, align 2
%5 = getelementptr i16, i16* %1, i64 4
%6 = bitcast i16* %5 to <2 x i16>*
store <2 x i16> zeroinitializer, <2 x i16>* %6, align 2
%7 = getelementptr i16, i16* %1, i64 6
%8 = bitcast i16* %7 to <2 x i16>*
store <2 x i16> zeroinitializer, <2 x i16>* %8, align 2
call void @f() #2
unreachable
}
declare void @f() local_unnamed_addr #1
attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="true" "no-jump-tables"="false" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="cortex-a57" "target-features"="+crc,+crypto,+fp-armv8,+neon" "unsafe-fp-math"="true" "use-soft-float"="false" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="true" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="cortex-a57" "target-features"="+crc,+crypto,+fp-armv8,+neon" "unsafe-fp-math"="true" "use-soft-float"="false" }
attributes #2 = { nounwind }