llvm-mirror/test/CodeGen/AArch64/arm64-fcopysign.ll
Paul Osmialowski 0fa09433f0 add support for -print-imm-hex for AArch64
Most immediates are printed in Aarch64InstPrinter using 'formatImm' macro,
but not all of them.

Implementation contains following rules:

- floating point immediates are always printed as decimal
- signed integer immediates are printed depends on flag settings
  (for negative values 'formatImm' macro prints the value as i.e -0x01
  which may be convenient when imm is an address or offset)
- logical immediates are always printed as hex
- the 64-bit immediate for advSIMD, encoded in "a🅱️c:d:e:f:g:h" is always printed as hex
- the 64-bit immedaite in exception generation instructions like:
  brk, dcps1, dcps2, dcps3, hlt, hvc, smc, svc is always printed as hex
- the rest of immediates is printed depends on availability
  of -print-imm-hex

Signed-off-by: Maciej Gabka <maciej.gabka@arm.com>
Signed-off-by: Paul Osmialowski <pawel.osmialowski@arm.com>

Differential Revision: http://reviews.llvm.org/D16929

llvm-svn: 269446
2016-05-13 18:00:09 +00:00

52 lines
1.4 KiB
LLVM

; RUN: llc < %s -mtriple=arm64-apple-darwin | FileCheck %s
; rdar://9332258
define float @test1(float %x, float %y) nounwind {
entry:
; CHECK-LABEL: test1:
; CHECK: movi.4s v2, #128, lsl #24
; CHECK: bit.16b v0, v1, v2
%0 = tail call float @copysignf(float %x, float %y) nounwind readnone
ret float %0
}
define double @test2(double %x, double %y) nounwind {
entry:
; CHECK-LABEL: test2:
; CHECK: movi.2d v2, #0
; CHECK: fneg.2d v2, v2
; CHECK: bit.16b v0, v1, v2
%0 = tail call double @copysign(double %x, double %y) nounwind readnone
ret double %0
}
; rdar://9545768
define double @test3(double %a, float %b, float %c) nounwind {
; CHECK-LABEL: test3:
; CHECK: fcvt d1, s1
; CHECK: fneg.2d v2, v{{[0-9]+}}
; CHECK: bit.16b v0, v1, v2
%tmp1 = fadd float %b, %c
%tmp2 = fpext float %tmp1 to double
%tmp = tail call double @copysign( double %a, double %tmp2 ) nounwind readnone
ret double %tmp
}
define float @test4() nounwind {
entry:
; CHECK-LABEL: test4:
; CHECK: fcvt s0, d0
; CHECK: movi.4s v[[CONST:[0-9]+]], #128, lsl #24
; CHECK: bit.16b v{{[0-9]+}}, v0, v[[CONST]]
%0 = tail call double (...) @bar() nounwind
%1 = fptrunc double %0 to float
%2 = tail call float @copysignf(float 5.000000e-01, float %1) nounwind readnone
%3 = fadd float %1, %2
ret float %3
}
declare double @bar(...)
declare double @copysign(double, double) nounwind readnone
declare float @copysignf(float, float) nounwind readnone