From 0196dc5733bf3c6a71f7de1f631f2c43e5809fd9 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Tue, 14 Jul 2009 20:57:04 +0000 Subject: Fix the expansion of umax and smax in the case where one or more of the operands have pointer type, so that the resulting type matches the original SCEV type, and so that unnecessary ptrtoints are avoided in common cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75680 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/IndVarSimplify/max-pointer.ll | 145 ++++++++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 test/Transforms/IndVarSimplify/max-pointer.ll (limited to 'test') diff --git a/test/Transforms/IndVarSimplify/max-pointer.ll b/test/Transforms/IndVarSimplify/max-pointer.ll new file mode 100644 index 0000000..ba2b2fa --- /dev/null +++ b/test/Transforms/IndVarSimplify/max-pointer.ll @@ -0,0 +1,145 @@ +; RUN: llvm-as < %s | opt -indvars | llvm-dis > %t +; RUN: grep {icmp ugt i8\\\*} %t | count 1 +; RUN: grep {icmp sgt i8\\\*} %t | count 1 + +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" + + %struct.CKenCodeCodec = type <{ i8 }> + +define void @foo(i8* %str1Ptr, i8* %str2Ptr, i8* %inLastBytePtr) nounwind { +entry: + %0 = icmp ult i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp ult i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @bar(i8* %str1Ptr, i64 %s, i8* %inLastBytePtr) nounwind { +entry: + %str2Ptr = inttoptr i64 %s to i8* + %0 = icmp ult i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp ult i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @qux(i64 %t, i64 %s, i8* %inLastBytePtr) nounwind { +entry: + %str1Ptr = inttoptr i64 %t to i8* + %str2Ptr = inttoptr i64 %s to i8* + %0 = icmp ult i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp ult i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @vor(i64 %t, i8* %str2Ptr, i8* %inLastBytePtr) nounwind { +entry: + %str1Ptr = inttoptr i64 %t to i8* + %0 = icmp ult i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp ult i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @sfoo(i8* %str1Ptr, i8* %str2Ptr, i8* %inLastBytePtr) nounwind { +entry: + %0 = icmp slt i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp slt i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @sbar(i8* %str1Ptr, i64 %s, i8* %inLastBytePtr) nounwind { +entry: + %str2Ptr = inttoptr i64 %s to i8* + %0 = icmp slt i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp slt i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @squx(i64 %t, i64 %s, i8* %inLastBytePtr) nounwind { +entry: + %str1Ptr = inttoptr i64 %t to i8* + %str2Ptr = inttoptr i64 %s to i8* + %0 = icmp slt i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp slt i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + +define void @svor(i64 %t, i8* %str2Ptr, i8* %inLastBytePtr) nounwind { +entry: + %str1Ptr = inttoptr i64 %t to i8* + %0 = icmp slt i8* %str2Ptr, %str1Ptr ; [#uses=1] + %str2Ptr_addr.0 = select i1 %0, i8* %str1Ptr, i8* %str2Ptr ; [#uses=1] + br label %bb2 + +bb2: ; preds = %bb2, %entry + %str2Ptr_addr.1 = phi i8* [ %str2Ptr_addr.0, %entry ], [ %1, %bb2 ] ; [#uses=1] + %1 = getelementptr i8* %str2Ptr_addr.1, i64 1 ; [#uses=2] + %2 = icmp slt i8* %1, %inLastBytePtr ; [#uses=0] + br i1 false, label %bb2, label %return + +return: ; preds = %bb2 + ret void +} + + -- cgit v1.1