llvm/test/CodeGen/X86/copysign-constant-magnitude.ll
Sanjay Patel ed06742efc [x86] add folds for FP logic with vector zeros
The 'or' case shows up in copysign. The copysign code also had 
redundant checking for a scalar zero operand with 'and', so I 
removed that. 

I'm not sure how to test vector 'and', 'andn', and 'xor' yet, 
but it seems better to just include all of the logic ops since
we're fixing 'or' anyway.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282546 91177308-0d34-0410-b5e6-96231b3b80d8
2016-09-27 22:28:13 +00:00

145 lines
4.5 KiB
LLVM

; RUN: llc -mtriple=x86_64-apple-macosx10.10.0 < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
; The assertions are *enhanced* from update_test_checks.ll to include
; the constant load values because those are important.
; CHECK: [[SIGNMASK1:L.+]]:
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
define double @mag_pos0_double(double %x) nounwind {
; CHECK-LABEL: mag_pos0_double:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK1]](%rip), %xmm0
; CHECK-NEXT: retq
;
%y = call double @copysign(double 0.0, double %x)
ret double %y
}
; CHECK: [[SIGNMASK2:L.+]]:
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
define double @mag_neg0_double(double %x) nounwind {
; CHECK-LABEL: mag_neg0_double:
; CHECK: ## BB#0:
; CHECK-NEXT: movsd [[SIGNMASK2]](%rip), %xmm1
; CHECK-NEXT: movlhps {{.*#+}} xmm1 = xmm1[0,0]
; CHECK-NEXT: andps %xmm1, %xmm0
; CHECK-NEXT: retq
;
%y = call double @copysign(double -0.0, double %x)
ret double %y
}
; CHECK: [[SIGNMASK3:L.+]]:
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
; CHECK: [[ONE3:L.+]]:
; CHECK-NEXT: .quad 4607182418800017408 ## double 1
define double @mag_pos1_double(double %x) nounwind {
; CHECK-LABEL: mag_pos1_double:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK3]](%rip), %xmm0
; CHECK-NEXT: movsd [[ONE3]](%rip), %xmm1
; CHECK-NEXT: movlhps {{.*#+}} xmm1 = xmm1[0,0]
; CHECK-NEXT: orps %xmm1, %xmm0
; CHECK-NEXT: retq
;
%y = call double @copysign(double 1.0, double %x)
ret double %y
}
; CHECK: [[SIGNMASK4:L.+]]:
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
; CHECK-NEXT: .quad -9223372036854775808 ## double -0
; CHECK: [[ONE4:L.+]]:
; CHECK-NEXT: .quad 4607182418800017408 ## double 1
; CHECK-NEXT: .quad 4607182418800017408 ## double 1
define double @mag_neg1_double(double %x) nounwind {
; CHECK-LABEL: mag_neg1_double:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK4]](%rip), %xmm0
; CHECK-NEXT: orps [[ONE4]](%rip), %xmm0
; CHECK-NEXT: retq
;
%y = call double @copysign(double -1.0, double %x)
ret double %y
}
; CHECK: [[SIGNMASK5:L.+]]:
; CHECK-NEXT: .long 2147483648 ## float -0
; CHECK-NEXT: .long 2147483648 ## float -0
define float @mag_pos0_float(float %x) nounwind {
; CHECK-LABEL: mag_pos0_float:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK5]](%rip), %xmm0
; CHECK-NEXT: retq
;
%y = call float @copysignf(float 0.0, float %x)
ret float %y
}
; CHECK: [[SIGNMASK6:L.+]]:
; CHECK-NEXT: .long 2147483648 ## float -0
define float @mag_neg0_float(float %x) nounwind {
; CHECK-LABEL: mag_neg0_float:
; CHECK: ## BB#0:
; CHECK-NEXT: movss [[SIGNMASK6]](%rip), %xmm1
; CHECK-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; CHECK-NEXT: andps %xmm1, %xmm0
; CHECK-NEXT: retq
;
%y = call float @copysignf(float -0.0, float %x)
ret float %y
}
; CHECK: [[SIGNMASK7:L.+]]:
; CHECK-NEXT: .long 2147483648 ## float -0
; CHECK-NEXT: .long 2147483648 ## float -0
; CHECK: [[ONE7:L.+]]:
; CHECK-NEXT: .long 1065353216 ## float 1
define float @mag_pos1_float(float %x) nounwind {
; CHECK-LABEL: mag_pos1_float:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK7]](%rip), %xmm0
; CHECK-NEXT: movss [[ONE7]](%rip), %xmm1
; CHECK-NEXT: shufps {{.*#+}} xmm1 = xmm1[0,0,0,0]
; CHECK-NEXT: orps %xmm1, %xmm0
; CHECK-NEXT: retq
;
%y = call float @copysignf(float 1.0, float %x)
ret float %y
}
; CHECK: [[SIGNMASK8:L.+]]:
; CHECK-NEXT: .long 2147483648 ## float -0
; CHECK-NEXT: .long 2147483648 ## float -0
; CHECK: [[ONE8:L.+]]:
; CHECK-NEXT: .long 1065353216 ## float 1
; CHECK-NEXT: .long 1065353216 ## float 1
; CHECK-NEXT: .long 1065353216 ## float 1
; CHECK-NEXT: .long 1065353216 ## float 1
define float @mag_neg1_float(float %x) nounwind {
; CHECK-LABEL: mag_neg1_float:
; CHECK: ## BB#0:
; CHECK-NEXT: andps [[SIGNMASK8]](%rip), %xmm0
; CHECK-NEXT: orps [[ONE8]](%rip), %xmm0
; CHECK-NEXT: retq
;
%y = call float @copysignf(float -1.0, float %x)
ret float %y
}
declare double @copysign(double, double) nounwind readnone
declare float @copysignf(float, float) nounwind readnone