mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-06 21:05:51 +00:00
07acee7a09
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170248 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
757 B
LLVM
40 lines
757 B
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
|
|
|
|
; CHECK: no_crash
|
|
define float @no_crash(float %a) nounwind {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%sum.057 = phi float [ 0.000000e+00, %entry ], [ %add5, %bb0 ]
|
|
%add5 = fadd float %sum.057, %a ; PR14592
|
|
br i1 undef, label %bb0, label %end
|
|
|
|
bb0:
|
|
br label %for.body
|
|
|
|
end:
|
|
ret float %add5
|
|
}
|
|
|
|
; CHECK: fold_phi
|
|
define float @fold_phi(float %a) nounwind {
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
; CHECK: phi float
|
|
; CHECK-NEXT: br i1 undef
|
|
%sum.057 = phi float [ 0.000000e+00, %entry ], [ %add5, %bb0 ]
|
|
%add5 = fadd float %sum.057, 1.0 ;; Should be moved to the latch!
|
|
br i1 undef, label %bb0, label %end
|
|
|
|
; CHECK: bb0:
|
|
bb0:
|
|
; CHECK: fadd float
|
|
br label %for.body
|
|
|
|
end:
|
|
ret float %add5
|
|
}
|