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Also match negative offsets for addrmode3 and addrmode5.

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Math is hard, and isScaledConstantInRange() always returned false for
negative constants.  It was doing unsigned division of negative numbers
before casting back to signed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140425 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2011-09-23 22:10:33 +00:00
parent 1f24002ed4
commit 11ebe3d7c1
2 changed files with 20 additions and 2 deletions
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18
test/CodeGen/ARM/fpmem.ll
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@@ -14,6 +14,24 @@ define float @f2(float* %v, float %u) {
ret float %tmp1
}
define float @f2offset(float* %v, float %u) {
; CHECK: f2offset:
; CHECK: vldr.32{{.*}}, #4]
%addr = getelementptr float* %v, i32 1
%tmp = load float* %addr
%tmp1 = fadd float %tmp, %u
ret float %tmp1
}
define float @f2noffset(float* %v, float %u) {
; CHECK: f2noffset:
; CHECK: vldr.32{{.*}}, #-4]
%addr = getelementptr float* %v, i32 -1
%tmp = load float* %addr
%tmp1 = fadd float %tmp, %u
ret float %tmp1
}
define void @f3(float %a, float %b, float* %v) {
; CHECK: f3:
; CHECK: vstr.32{{.*}}[