forked from OSchip/llvm-project
26 lines
760 B
LLVM
26 lines
760 B
LLVM
; RUN: opt < %s -lcssa -S | FileCheck %s
|
|
; RUN: opt < %s -passes=lcssa -S | FileCheck %s
|
|
|
|
define void @lcssa(i1 %S2) {
|
|
; CHECK-LABEL: @lcssa
|
|
entry:
|
|
br label %loop.interior
|
|
loop.interior: ; preds = %post.if, %entry
|
|
br i1 %S2, label %if.true, label %if.false
|
|
if.true: ; preds = %loop.interior
|
|
%X1 = add i32 0, 0 ; <i32> [#uses=1]
|
|
br label %post.if
|
|
if.false: ; preds = %loop.interior
|
|
%X2 = add i32 0, 1 ; <i32> [#uses=1]
|
|
br label %post.if
|
|
post.if: ; preds = %if.false, %if.true
|
|
%X3 = phi i32 [ %X1, %if.true ], [ %X2, %if.false ] ; <i32> [#uses=1]
|
|
br i1 %S2, label %loop.exit, label %loop.interior
|
|
loop.exit: ; preds = %post.if
|
|
; CHECK: %X3.lcssa = phi i32
|
|
; CHECK: %X4 = add i32 3, %X3.lcssa
|
|
%X4 = add i32 3, %X3 ; <i32> [#uses=0]
|
|
ret void
|
|
}
|
|
|