From f876ad0a70c5c3bb402de2766237410f041700e6 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Tue, 26 May 2009 17:41:16 +0000 Subject: In cases where a pointer value is an operand of a multiplication or division operation, don't attempt to use the operation's value as the base of a getelementptr. This fixes PR4271. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72422 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Transforms/IndVarSimplify/divide-pointer.ll | 95 ++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 test/Transforms/IndVarSimplify/divide-pointer.ll (limited to 'test/Transforms/IndVarSimplify') diff --git a/test/Transforms/IndVarSimplify/divide-pointer.ll b/test/Transforms/IndVarSimplify/divide-pointer.ll new file mode 100644 index 0000000000..747d47eb86 --- /dev/null +++ b/test/Transforms/IndVarSimplify/divide-pointer.ll @@ -0,0 +1,95 @@ +; RUN: llvm-as < %s | opt -indvars +; PR4271 + +target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" +target triple = "i386-apple-darwin10.0" + %struct.xyz = type <{ i64, i64, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i64, [8 x i8], i64, i64, i32, i32, [4 x i32], i32, i32, i32, i32, i32, i32, [76 x i32], i32, [2 x %struct.uvw] }> + %struct.uvw = type <{ i64, i64 }> + +define i32 @foo(%struct.xyz* %header, i8* %p2, i8* %p3, i8* nocapture %p4) nounwind { +entry: + br label %while.body.i + +while.body.i: ; preds = %while.body.i, %entry + br i1 undef, label %while.body.i, label %bcopy_internal.exit + +bcopy_internal.exit: ; preds = %while.body.i + %conv135 = ptrtoint %struct.xyz* %header to i32 ; [#uses=1] + %shr136 = lshr i32 %conv135, 12 ; [#uses=1] + br label %for.body + +for.body: ; preds = %for.body, %bcopy_internal.exit + %ppnum.052 = phi i32 [ %inc, %for.body ], [ %shr136, %bcopy_internal.exit ] ; [#uses=1] + %inc = add i32 %ppnum.052, 1 ; [#uses=2] + %cmp = icmp ugt i32 %inc, undef ; [#uses=1] + br i1 %cmp, label %if.then199, label %for.body + +if.then199: ; preds = %if.then199, %for.body + br label %if.then199 +} + +define i32 @same_thing_but_signed(%struct.xyz* %header, i8* %p2, i8* %p3, i8* nocapture %p4) nounwind { +entry: + br label %while.body.i + +while.body.i: ; preds = %while.body.i, %entry + br i1 undef, label %while.body.i, label %bcopy_internal.exit + +bcopy_internal.exit: ; preds = %while.body.i + %conv135 = ptrtoint %struct.xyz* %header to i32 ; [#uses=1] + %shr136 = ashr i32 %conv135, 12 ; [#uses=1] + br label %for.body + +for.body: ; preds = %for.body, %bcopy_internal.exit + %ppnum.052 = phi i32 [ %inc, %for.body ], [ %shr136, %bcopy_internal.exit ] ; [#uses=1] + %inc = add i32 %ppnum.052, 1 ; [#uses=2] + %cmp = icmp ugt i32 %inc, undef ; [#uses=1] + br i1 %cmp, label %if.then199, label %for.body + +if.then199: ; preds = %if.then199, %for.body + br label %if.then199 +} + +define i32 @same_thing_but_multiplied(%struct.xyz* %header, i8* %p2, i8* %p3, i8* nocapture %p4) nounwind { +entry: + br label %while.body.i + +while.body.i: ; preds = %while.body.i, %entry + br i1 undef, label %while.body.i, label %bcopy_internal.exit + +bcopy_internal.exit: ; preds = %while.body.i + %conv135 = ptrtoint %struct.xyz* %header to i32 ; [#uses=1] + %shr136 = shl i32 %conv135, 12 ; [#uses=1] + br label %for.body + +for.body: ; preds = %for.body, %bcopy_internal.exit + %ppnum.052 = phi i32 [ %inc, %for.body ], [ %shr136, %bcopy_internal.exit ] ; [#uses=1] + %inc = add i32 %ppnum.052, 1 ; [#uses=2] + %cmp = icmp ugt i32 %inc, undef ; [#uses=1] + br i1 %cmp, label %if.then199, label %for.body + +if.then199: ; preds = %if.then199, %for.body + br label %if.then199 +} + +define i32 @same_thing_but_xored(%struct.xyz* %header, i8* %p2, i8* %p3, i8* nocapture %p4) nounwind { +entry: + br label %while.body.i + +while.body.i: ; preds = %while.body.i, %entry + br i1 undef, label %while.body.i, label %bcopy_internal.exit + +bcopy_internal.exit: ; preds = %while.body.i + %conv135 = ptrtoint %struct.xyz* %header to i32 ; [#uses=1] + %shr136 = xor i32 %conv135, 12 ; [#uses=1] + br label %for.body + +for.body: ; preds = %for.body, %bcopy_internal.exit + %ppnum.052 = phi i32 [ %inc, %for.body ], [ %shr136, %bcopy_internal.exit ] ; [#uses=1] + %inc = add i32 %ppnum.052, 1 ; [#uses=2] + %cmp = icmp ugt i32 %inc, undef ; [#uses=1] + br i1 %cmp, label %if.then199, label %for.body + +if.then199: ; preds = %if.then199, %for.body + br label %if.then199 +} -- cgit v1.2.3