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[AArch64] add tests with sqrt estimate and ieee denorms; NFC

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As noted in D42323, we're not checking for denorms as we should.

llvm-svn: 323985
This commit is contained in:
Sanjay Patel 2018-02-01 17:57:45 +00:00
parent 682274fd05
commit 7ca0c99a03
1 changed files with 50 additions and 0 deletions
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50
test/CodeGen/AArch64/sqrt-fastmath.ll
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@ -33,6 +33,29 @@ define float @fsqrt(float %a) #0 {
ret float %1
}
define float @fsqrt_ieee_denorms(float %a) #1 {
; FAULT-LABEL: fsqrt_ieee_denorms:
; FAULT: // %bb.0:
; FAULT-NEXT: fsqrt s0, s0
; FAULT-NEXT: ret
;
; CHECK-LABEL: fsqrt_ieee_denorms:
; CHECK: // %bb.0:
; CHECK-NEXT: frsqrte s1, s0
; CHECK-NEXT: fmul s2, s1, s1
; CHECK-NEXT: frsqrts s2, s0, s2
; CHECK-NEXT: fmul s1, s1, s2
; CHECK-NEXT: fmul s2, s1, s1
; CHECK-NEXT: frsqrts s2, s0, s2
; CHECK-NEXT: fmul s2, s2, s0
; CHECK-NEXT: fmul s1, s1, s2
; CHECK-NEXT: fcmp s0, #0.0
; CHECK-NEXT: fcsel s0, s0, s1, eq
; CHECK-NEXT: ret
%1 = tail call fast float @llvm.sqrt.f32(float %a)
ret float %1
}
define <2 x float> @f2sqrt(<2 x float> %a) #0 {
; FAULT-LABEL: f2sqrt:
; FAULT: // %bb.0:
@ -143,6 +166,32 @@ define double @dsqrt(double %a) #0 {
ret double %1
}
define double @dsqrt_ieee_denorms(double %a) #1 {
; FAULT-LABEL: dsqrt_ieee_denorms:
; FAULT: // %bb.0:
; FAULT-NEXT: fsqrt d0, d0
; FAULT-NEXT: ret
;
; CHECK-LABEL: dsqrt_ieee_denorms:
; CHECK: // %bb.0:
; CHECK-NEXT: frsqrte d1, d0
; CHECK-NEXT: fmul d2, d1, d1
; CHECK-NEXT: frsqrts d2, d0, d2
; CHECK-NEXT: fmul d1, d1, d2
; CHECK-NEXT: fmul d2, d1, d1
; CHECK-NEXT: frsqrts d2, d0, d2
; CHECK-NEXT: fmul d1, d1, d2
; CHECK-NEXT: fmul d2, d1, d1
; CHECK-NEXT: frsqrts d2, d0, d2
; CHECK-NEXT: fmul d2, d2, d0
; CHECK-NEXT: fmul d1, d1, d2
; CHECK-NEXT: fcmp d0, #0.0
; CHECK-NEXT: fcsel d0, d0, d1, eq
; CHECK-NEXT: ret
%1 = tail call fast double @llvm.sqrt.f64(double %a)
ret double %1
}
define <2 x double> @d2sqrt(<2 x double> %a) #0 {
; FAULT-LABEL: d2sqrt:
; FAULT: // %bb.0:
@ -404,4 +453,5 @@ define <4 x double> @d4rsqrt(<4 x double> %a) #0 {
}
attributes #0 = { "unsafe-fp-math"="true" }
attributes #1 = { "unsafe-fp-math"="true" "denormal-fp-math"="ieee" }