Eliminate explicit control flow in tests

llvm-svn: 6961

llvm/test/Regression/Transforms/SimplifyCFG/2002-06-24-PHINode.ll

@@ -1,10 +1,7 @@
 ; -simplifycfg is not folding blocks if there is a PHI node involved.  This 
 ; should be fixed eventually
 
-; RUN: if as < %s | opt -simplifycfg | dis | grep br
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep br
 
 int %main(int %argc) {
         br label %InlinedFunctionReturnNode

llvm/test/Regression/Transforms/SimplifyCFG/EqualPHIEdgeBlockMerge.ll

@@ -1,9 +1,6 @@
 ; Test merging of blocks with phi nodes.
 ;
-; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep 'N:'
 ;
 
 int %test(bool %a) {

llvm/test/Regression/Transforms/SimplifyCFG/PhiBlockMerge.ll

@@ -1,9 +1,6 @@
 ; Test merging of blocks that only have PHI nodes in them
 ;
-; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep 'N:'
 ;
 
 int %test(bool %a, bool %b) {

llvm/test/Regression/Transforms/SimplifyCFG/PhiBlockMerge2.ll

@@ -2,10 +2,7 @@
 ; where the mergedinto block doesn't have any PHI nodes, and is in fact 
 ; dominated by the block-to-be-eliminated
 ;
-; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep 'N:'
 ;
 
 int %test(bool %a, bool %b) {

llvm/test/Regression/Transforms/SimplifyCFG/basictest.ll

@@ -1,9 +1,6 @@
 ; Test CFG simplify removal of branch instructions...
 ;
-; RUN: if as < %s | opt -simplifycfg | dis | grep br
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | dis | not grep br
 
 
 void "test1"() {

llvm/test/Regression/Transforms/SimplifyCFG/branch-fold-test.ll

@@ -1,10 +1,7 @@
 ; This test ensures that the simplifycfg pass continues to constant fold
 ; terminator instructions.
 
-; RUN: if as < %s | opt -simplifycfg | grep br
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: as < %s | opt -simplifycfg | not grep br
 
 int %test(int %A, int %B) {
 J: