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llvm-mirror/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll
Rafael Espindola 3bb0f9391c Remove the old tail duplication pass. It is not used and is unable to update
ssa, so it has to be run really early in the pipeline. Any replacement
should probably use the SSAUpdater.

llvm-svn: 138841
2011-08-30 23:03:45 +00:00

53 lines
2.3 KiB
LLVM

; RUN: opt < %s -instcombine -simplifycfg -licm -disable-output
target datalayout = "e-p:32:32"
@yy_base = external global [787 x i16] ; <[787 x i16]*> [#uses=1]
@yy_state_ptr = external global i32* ; <i32**> [#uses=3]
@yy_state_buf = external global [16386 x i32] ; <[16386 x i32]*> [#uses=1]
@yy_lp = external global i32 ; <i32*> [#uses=1]
define i32 @_yylex() {
br label %loopentry.0
loopentry.0: ; preds = %else.26, %0
store i32* getelementptr ([16386 x i32]* @yy_state_buf, i64 0, i64 0), i32** @yy_state_ptr
%tmp.35 = load i32** @yy_state_ptr ; <i32*> [#uses=2]
%inc.0 = getelementptr i32* %tmp.35, i64 1 ; <i32*> [#uses=1]
store i32* %inc.0, i32** @yy_state_ptr
%tmp.36 = load i32* null ; <i32> [#uses=1]
store i32 %tmp.36, i32* %tmp.35
br label %loopexit.2
loopexit.2: ; preds = %else.26, %loopexit.2, %loopentry.0
store i8* null, i8** null
%tmp.91 = load i32* null ; <i32> [#uses=1]
%tmp.92 = sext i32 %tmp.91 to i64 ; <i64> [#uses=1]
%tmp.93 = getelementptr [787 x i16]* @yy_base, i64 0, i64 %tmp.92 ; <i16*> [#uses=1]
%tmp.94 = load i16* %tmp.93 ; <i16> [#uses=1]
%tmp.95 = icmp ne i16 %tmp.94, 4394 ; <i1> [#uses=1]
br i1 %tmp.95, label %loopexit.2, label %yy_find_action
yy_find_action: ; preds = %else.26, %loopexit.2
br label %loopentry.3
loopentry.3: ; preds = %then.9, %shortcirc_done.0, %yy_find_action
%tmp.105 = load i32* @yy_lp ; <i32> [#uses=1]
%tmp.106 = icmp ne i32 %tmp.105, 0 ; <i1> [#uses=1]
br i1 %tmp.106, label %shortcirc_next.0, label %shortcirc_done.0
shortcirc_next.0: ; preds = %loopentry.3
%tmp.114 = load i16* null ; <i16> [#uses=1]
%tmp.115 = sext i16 %tmp.114 to i32 ; <i32> [#uses=1]
%tmp.116 = icmp slt i32 0, %tmp.115 ; <i1> [#uses=1]
br label %shortcirc_done.0
shortcirc_done.0: ; preds = %shortcirc_next.0, %loopentry.3
%shortcirc_val.0 = phi i1 [ false, %loopentry.3 ], [ %tmp.116, %shortcirc_next.0 ] ; <i1> [#uses=1]
br i1 %shortcirc_val.0, label %else.0, label %loopentry.3
else.0: ; preds = %shortcirc_done.0
%tmp.144 = load i32* null ; <i32> [#uses=1]
%tmp.145 = and i32 %tmp.144, 8192 ; <i32> [#uses=1]
%tmp.146 = icmp ne i32 %tmp.145, 0 ; <i1> [#uses=1]
br i1 %tmp.146, label %then.9, label %else.26
then.9: ; preds = %else.0
br label %loopentry.3
else.26: ; preds = %else.0
switch i32 0, label %loopentry.0 [
i32 2, label %yy_find_action
i32 0, label %loopexit.2
]
}