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; RUN: llc < %s -march=x86 -mattr=sse4.1 | FileCheck %s
; <rdar://problem/7859988>
; Make sure we don't generate more jumps than we need to. We used to generate
; something like this:
;
; jne LBB0_1
; jnp LBB0_2
; LBB0_1:
; jmp LBB0_3
; LBB0_2:
; addsd ...
; LBB0_3:
;
; Now we generate this:
;
; jne LBB0_2
; jp LBB0_2
; addsd ...
; LBB0_2:
; CHECK: func
; CHECK: jne [[LABEL:.*]]
; CHECK-NEXT: jp [[LABEL]]
; CHECK-NOT: jmp
define float @func(float %x, float %y) nounwind readnone optsize ssp {
entry:
%0 = fpext float %x to double
%1 = fpext float %y to double
%2 = fmul double %0, %1
%3 = fcmp une double %2, 0.000000e+00
br i1 %3, label %bb2, label %bb1
bb1:
%4 = fadd double %2, -1.000000e+00
br label %bb2
bb2:
%.0.in = phi double [ %4, %bb1 ], [ %2, %entry ]
%.0 = fptrunc double %.0.in to float
ret float %.0
}
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