[Sparc][LEON] Test for FixFDIVSQRT erratum fix.

Note: Test is per differential review, but the other changed code in the review was for an optimisation that din't quite work. Nevertheless, the test is valid for the unoptimised version of the fix.

Differential Review: https://reviews.llvm.org/D24658

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285692 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Dewhurst 2016-11-01 14:23:37 +00:00
parent 9b12d6a515
commit 447ffef48b

View File

@ -0,0 +1,59 @@
; RUN: llc %s -O0 -march=sparc -mcpu=leon3 -mattr=+fixallfdivsqrt -o - | FileCheck %s
; RUN: llc %s -O0 -march=sparc -mcpu=ut699 -o - | FileCheck %s
; CHECK-LABEL: test_1
; CHECK: nop
; CHECK: nop
; CHECK: fdivd
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
define double @test_1(double* byval %a, double* byval %b) {
entry:
%0 = load double, double* %a, align 8
%1 = load double, double* %b, align 8
%res = fdiv double %0, %1
ret double %res
}
declare double @llvm.sqrt.f64(double) nounwind readonly
; CHECK-LABEL: test_2
; CHECK: nop
; CHECK: nop
; CHECK: nop
; CHECK: nop
; CHECK: nop
; CHECK: fsqrtd
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
; CHECK-NEXT: nop
define double @test_2(double* byval %a) {
entry:
%0 = load double, double* %a, align 8
%1 = call double @llvm.sqrt.f64(double %0) nounwind
ret double %1
}