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add tests for disguised fabs/fneg

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llvm-svn: 267053
This commit is contained in:
Sanjay Patel 2016-04-21 21:02:25 +00:00
parent badcb2a95c
commit 081b99ba47
1 changed files with 29 additions and 0 deletions
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29
test/CodeGen/AArch64/fcvt-int.ll
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@ -149,3 +149,32 @@ define double @test_bitcasti64todouble(i64 %in) {
ret double %res
}
define double @bitcast_fabs(double %x) {
; CHECK-LABEL: bitcast_fabs:
; CHECK: ; BB#0:
; CHECK-NEXT: fmov x8, d0
; CHECK-NEXT: and x8, x8, #0x7fffffffffffffff
; CHECK-NEXT: fmov d0, x8
; CHECK-NEXT: ret
;
%bc1 = bitcast double %x to i64
%and = and i64 %bc1, 9223372036854775807
%bc2 = bitcast i64 %and to double
ret double %bc2
}
define float @bitcast_fneg(float %x) {
; CHECK-LABEL: bitcast_fneg:
; CHECK: ; BB#0:
; CHECK-NEXT: fmov w8, s0
; CHECK-NEXT: eor w8, w8, #0x80000000
; CHECK-NEXT: fmov s0, w8
; CHECK-NEXT: ret
;
%bc1 = bitcast float %x to i32
%xor = xor i32 %bc1, 2147483648
%bc2 = bitcast i32 %xor to float
ret float %bc2
}