llvm-6502/test/CodeGen/X86/legalize-sub-zero-2.ll
Eric Christopher 169e1552e7 The change for PR9190 wasn't quite right. We need to avoid making the
transformation if we can't legally create a build vector of the correct
type. Check that we can make the transformation first, and add a TODO to
refactor this code with similar cases.

Fixes: PR9223 and rdar://9000350


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125631 91177308-0d34-0410-b5e6-96231b3b80d8
2011-02-16 01:10:03 +00:00

42 lines
1.2 KiB
LLVM

; RUN: llc < %s -mtriple=i386-apple-darwin
define fastcc void @foo(i32 %type) nounwind optsize {
entry:
switch i32 %type, label %bb26 [
i32 33634, label %bb11
i32 5121, label %bb27
]
bb11: ; preds = %entry
br label %bb27
bb26: ; preds = %entry
unreachable
bb27: ; preds = %bb11, %entry
%srcpb.0 = phi i32 [ 1, %bb11 ], [ 0, %entry ]
br i1 undef, label %bb348, label %bb30.lr.ph
bb30.lr.ph: ; preds = %bb27
%.sum743 = shl i32 %srcpb.0, 1
%0 = mul i32 %srcpb.0, -2
%.sum745 = add i32 %.sum743, %0
br i1 undef, label %bb70, label %bb71
bb70: ; preds = %bb30.lr.ph
unreachable
bb71: ; preds = %bb30.lr.ph
br i1 undef, label %bb92, label %bb80
bb80: ; preds = %bb71
unreachable
bb92: ; preds = %bb71
%1 = getelementptr inbounds i8* undef, i32 %.sum745
unreachable
bb348: ; preds = %bb27
ret void
}