File: 2010-06-29-PartialRedefFastAlloc.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (25 lines) | stat: -rw-r--r-- 941 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
; RUN: llc < %s -O0 -mcpu=cortex-a8 | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin10"

; This tests the fast register allocator's handling of partial redefines:
;
;      %reg1028:dsub_0, %reg1028:dsub_1 = VLD1q64 %reg1025...
;      %reg1030:dsub_1 = COPY killed %reg1028:dsub_0
;
; %reg1028 gets allocated %Q0, and if %reg1030 is reloaded for the partial
; redef, it cannot also get %Q0.

; CHECK: vld1.64 {d16, d17}, [r{{.}}]
; CHECK-NOT: vld1.64 {d16, d17}
; CHECK: vmov.f64

define i32 @test(ptr %arg) nounwind {
entry:
 %0 = call <2 x i64> @llvm.arm.neon.vld1.v2i64.p0(ptr %arg, i32 1)
 %1 = shufflevector <2 x i64> undef, <2 x i64> %0, <2 x i32> <i32 1, i32 2>
 store <2 x i64> %1, ptr undef, align 16
 ret i32 undef
}

declare <2 x i64> @llvm.arm.neon.vld1.v2i64.p0(ptr, i32) nounwind readonly