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TargetLowering: n * r where n > 2 should be an illegal addressing mode

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201433 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2014-02-14 21:10:34 +00:00
parent 3b0acd4ef4
commit 5f80594797
2 changed files with 20 additions and 0 deletions
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2
lib/CodeGen/TargetLoweringBase.cpp
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@ -1420,6 +1420,8 @@ bool TargetLoweringBase::isLegalAddressingMode(const AddrMode &AM,
return false;
// Allow 2*r as r+r.
break;
default: // Don't allow n * r
return false;
}
return true;

18
test/CodeGen/R600/codegen-prepare-addrmode-sext.ll Normal file
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@ -0,0 +1,18 @@
; RUN: opt -codegenprepare -S -o - %s | FileCheck %s
target datalayout = "e-p:32:32-p1:64:64-p2:64:64-p3:32:32-p4:32:32-p5:64:64-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-v512:512-v1024:1024-v2048:2048-n32:64"
target triple = "r600--"
; XFAIL: *
; CHECK-LABEL: @test
; CHECK: mul
; CHECK-NEXT: sext
define void @test(i8 addrspace(1)* nocapture readonly %in, i32 %a, i8 %b) {
entry:
%0 = mul nsw i32 %a, 3
%1 = sext i32 %0 to i64
%2 = getelementptr i8 addrspace(1)* %in, i64 %1
store i8 %b, i8 addrspace(1)* %2
ret void
}