llvm-mirror/test/CodeGen/AArch64/large-consts.ll
Evandro Menezes 5d88cb6cf6 [AArch64] Generate literals by the little end
ARM seems to prefer that long literals be formed from their little end in
order to promote the fusion of the instrs pairs MOV/MOVK and MOVK/MOVK on
Cortex A57 and others (v.  "Cortex A57 Software Optimisation Guide", section
4.14).

Differential revision: https://reviews.llvm.org/D28697

llvm-svn: 292422
2017-01-18 18:57:08 +00:00

15 lines
641 B
LLVM

; RUN: llc -mtriple=aarch64-linux-gnu -o - %s -code-model=large -show-mc-encoding | FileCheck %s
; Make sure the shift amount is encoded into the instructions by LLVM because
; it's not the linker's job to put it there.
define double @foo() {
; CHECK: movz [[CPADDR:x[0-9]+]], #:abs_g0_nc:.LCPI0_0 // encoding: [0bAAA01000,A,0b100AAAAA,0xd2]
; CHECK: movk [[CPADDR]], #:abs_g1_nc:.LCPI0_0 // encoding: [0bAAA01000,A,0b101AAAAA,0xf2]
; CHECK: movk [[CPADDR]], #:abs_g2_nc:.LCPI0_0 // encoding: [0bAAA01000,A,0b110AAAAA,0xf2]
; CHECK: movk [[CPADDR]], #:abs_g3:.LCPI0_0 // encoding: [0bAAA01000,A,0b111AAAAA,0xf2]
ret double 3.14159
}