llvm.org GIT mirror llvm / release_38 test / CodeGen / X86 / phys_subreg_coalesce-2.ll
release_38

Tree @release_38 (Download .tar.gz)

phys_subreg_coalesce-2.ll @release_38raw · history · blame

; RUN: llc < %s -march=x86 | FileCheck %s
; RUN: llc -no-phi-elim-live-out-early-exit -terminal-rule < %s -march=x86 | FileCheck %s
; PR2659

define i32 @binomial(i32 %n, i32 %k) nounwind {
entry:
	%cmp = icmp ugt i32 %k, %n		; <i1> [#uses=1]
	br i1 %cmp, label %ifthen, label %forcond.preheader

forcond.preheader:		; preds = %entry
	%cmp44 = icmp eq i32 %k, 0		; <i1> [#uses=1]
	br i1 %cmp44, label %afterfor, label %forbody

ifthen:		; preds = %entry
	ret i32 0
; CHECK: forbody
; CHECK-NOT: mov
forbody:		; preds = %forbody, %forcond.preheader
	%indvar = phi i32 [ 0, %forcond.preheader ], [ %divisor.02, %forbody ]		; <i32> [#uses=3]
	%accumulator.01 = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ]		; <i32> [#uses=1]
	%divisor.02 = add i32 %indvar, 1		; <i32> [#uses=2]
	%n.addr.03 = sub i32 %n, %indvar		; <i32> [#uses=1]
	%mul = mul i32 %n.addr.03, %accumulator.01		; <i32> [#uses=1]
	%div = udiv i32 %mul, %divisor.02		; <i32> [#uses=2]
	%inc = add i32 %indvar, 2		; <i32> [#uses=1]
	%cmp4 = icmp ugt i32 %inc, %k		; <i1> [#uses=1]
	br i1 %cmp4, label %afterfor, label %forbody

afterfor:		; preds = %forbody, %forcond.preheader
	%accumulator.0.lcssa = phi i32 [ 1, %forcond.preheader ], [ %div, %forbody ]		; <i32> [#uses=1]
	ret i32 %accumulator.0.lcssa
}