[llvm-commits] [llvm] r135299 - /llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll

[Chad Rosier]

Author: mcrosier
Date: Fri Jul 15 15:58:38 2011
New Revision: 135299

URL: http://llvm.org/viewvc/llvm-project?rev=135299&view=rev
Log:
A real testcase for r135286.

Modified:
    llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll

Modified: llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll?rev=135299&r1=135298&r2=135299&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll (original)
+++ llvm/trunk/test/Transforms/LoopIdiom/memset_noidiom.ll Fri Jul 15 15:58:38 2011
@@ -1,47 +1,30 @@
-; RUN: opt -basicaa -loop-idiom < %s -S | FileCheck %s
+; RUN: opt -loop-idiom < %s -S | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-apple-darwin10.0.0"
 
 ; CHECK: @memset
-; CHECK-NOT: callq _memset
+; CHECK-NOT: llvm.memset
 define i8* @memset(i8* %b, i32 %c, i64 %len) nounwind uwtable ssp {
 entry:
-  %b.addr = alloca i8*, align 8
-  %c.addr = alloca i32, align 4
-  %len.addr = alloca i64, align 8
-  %p = alloca i8*, align 8
-  %i = alloca i32, align 4
-  store i8* %b, i8** %b.addr, align 8
-  store i32 %c, i32* %c.addr, align 4
-  store i64 %len, i64* %len.addr, align 8
-  %tmp = load i8** %b.addr, align 8
-  store i8* %tmp, i8** %p, align 8
-  store i32 0, i32* %i, align 4
-  br label %for.cond
-
-for.cond:                                         ; preds = %for.inc, %entry
-  %tmp2 = load i32* %i, align 4
-  %conv = sext i32 %tmp2 to i64
-  %tmp3 = load i64* %len.addr, align 8
-  %cmp = icmp ult i64 %conv, %tmp3
-  br i1 %cmp, label %for.body, label %for.end
-
-for.body:                                         ; preds = %for.cond
-  %tmp5 = load i32* %c.addr, align 4
-  %conv6 = trunc i32 %tmp5 to i8
-  %tmp7 = load i8** %p, align 8
-  %incdec.ptr = getelementptr inbounds i8* %tmp7, i32 1
-  store i8* %incdec.ptr, i8** %p, align 8
-  store i8 %conv6, i8* %tmp7
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body
-  %tmp8 = load i32* %i, align 4
-  %inc = add nsw i32 %tmp8, 1
-  store i32 %inc, i32* %i, align 4
-  br label %for.cond
-
-for.end:                                          ; preds = %for.cond
-  %tmp9 = load i8** %b.addr, align 8
-  ret i8* %tmp9
+  %cmp1 = icmp ult i64 0, %len
+  br i1 %cmp1, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  %conv6 = trunc i32 %c to i8
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ]
+  %p.02 = getelementptr i8* %b, i64 %indvar
+  store i8 %conv6, i8* %p.02, align 1
+  %indvar.next = add i64 %indvar, 1
+  %exitcond = icmp ne i64 %indvar.next, %len
+  br i1 %exitcond, label %for.body, label %for.cond.for.end_crit_edge
+
+for.cond.for.end_crit_edge:                       ; preds = %for.body
+  br label %for.end
+
+for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry
+  ret i8* %b
 }
+