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