[InstCombine] Canonicalize single element array load

[oota-llvm.git] / test / Transforms / InstCombine / stacksaverestore.ll

diff --git a/test/Transforms/InstCombine/stacksaverestore.ll b/test/Transforms/InstCombine/stacksaverestore.ll
index f5a0c762e99c4f1f9c65ddc60839aa1435020649..de400e91a7518df9c236f321517720ebf1dd54b6 100644 (file)
--- a/test/Transforms/InstCombine/stacksaverestore.ll
+++ b/test/Transforms/InstCombine/stacksaverestore.ll
@@ -1,19 +1,56 @@
-; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | not grep {call.*stackrestore}
+; RUN: opt < %s -instcombine -S | grep "call.*stackrestore" | count 1
+
+declare i8* @llvm.stacksave()
+declare void @llvm.stackrestore(i8*)
 
 ;; Test that llvm.stackrestore is removed when possible.
+define i32* @test1(i32 %P) {
+       %tmp = call i8* @llvm.stacksave( )
+       call void @llvm.stackrestore( i8* %tmp ) ;; not restoring anything
+       %A = alloca i32, i32 %P         
+       ret i32* %A
+}
 
-int* %test1(uint %P) {
-        %tmp = call sbyte* %llvm.stacksave()
-        call void %llvm.stackrestore(sbyte* %tmp) ;; not restoring anything
-       %A = alloca int, uint %P
-        ret int* %A
+define void @test2(i8* %X) {
+       call void @llvm.stackrestore( i8* %X )  ;; no allocas before return.
+       ret void
 }
 
-void %test2(sbyte* %X) {
-       call void %llvm.stackrestore(sbyte* %X)  ;; no allocas before return.
+define void @foo(i32 %size) nounwind  {
+entry:
+       %tmp118124 = icmp sgt i32 %size, 0              ; <i1> [#uses=1]
+       br i1 %tmp118124, label %bb.preheader, label %return
+
+bb.preheader:          ; preds = %entry
+       %tmp25 = add i32 %size, -1              ; <i32> [#uses=1]
+       %tmp125 = icmp slt i32 %size, 1         ; <i1> [#uses=1]
+       %smax = select i1 %tmp125, i32 1, i32 %size             ; <i32> [#uses=1]
+       br label %bb
+
+bb:            ; preds = %bb, %bb.preheader
+       %i.0.reg2mem.0 = phi i32 [ 0, %bb.preheader ], [ %indvar.next, %bb ]            ; <i32> [#uses=2]
+       %tmp = call i8* @llvm.stacksave( )              ; <i8*> [#uses=1]
+       %tmp23 = alloca i8, i32 %size           ; <i8*> [#uses=2]
+       %tmp27 = getelementptr i8, i8* %tmp23, i32 %tmp25               ; <i8*> [#uses=1]
+       store i8 0, i8* %tmp27, align 1
+       %tmp28 = call i8* @llvm.stacksave( )            ; <i8*> [#uses=1]
+       %tmp52 = alloca i8, i32 %size           ; <i8*> [#uses=1]
+       %tmp53 = call i8* @llvm.stacksave( )            ; <i8*> [#uses=1]
+       %tmp77 = alloca i8, i32 %size           ; <i8*> [#uses=1]
+       %tmp78 = call i8* @llvm.stacksave( )            ; <i8*> [#uses=1]
+       %tmp102 = alloca i8, i32 %size          ; <i8*> [#uses=1]
+       call void @bar( i32 %i.0.reg2mem.0, i8* %tmp23, i8* %tmp52, i8* %tmp77, i8* %tmp102, i32 %size ) nounwind 
+       call void @llvm.stackrestore( i8* %tmp78 )
+       call void @llvm.stackrestore( i8* %tmp53 )
+       call void @llvm.stackrestore( i8* %tmp28 )
+       call void @llvm.stackrestore( i8* %tmp )
+       %indvar.next = add i32 %i.0.reg2mem.0, 1                ; <i32> [#uses=2]
+       %exitcond = icmp eq i32 %indvar.next, %smax             ; <i1> [#uses=1]
+       br i1 %exitcond, label %return, label %bb
+
+return:                ; preds = %bb, %entry
        ret void
 }
 
-declare sbyte* %llvm.stacksave()
+declare void @bar(i32, i8*, i8*, i8*, i8*, i32)
 
-declare void %llvm.stackrestore(sbyte*)