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llvm-project/llvm/test/CodeGen/X86/2012-07-16-LeaUndef.ll

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X86: Do not use llc -march in tests. `llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309774
2017-08-02 08:28:10 +08:00
; RUN: llc < %s -mtriple=x86_64-- -mcpu=corei7
Fix a bug in the 3-address conversion of LEA when one of the operands is an undef virtual register. The problem is that ProcessImplicitDefs removes the definition of the register and marks all uses as undef. If we lose the undef marker then we get a register which has no def, is not marked as undef. The live interval analysis does not collect information for these virtual registers and we crash in later passes. Together with Michael Kuperstein <michael.m.kuperstein@intel.com> llvm-svn: 160260
2012-07-16 18:52:25 +08:00
define void @autogen_SD2543() {
A:
%E83 = add i32 0, 1
%E820 = add i32 0, undef
br label %C
C:
%B908 = add i32 %E83, %E820
store i32 %B908, i32* undef
%Sl2391 = select i1 undef, i32 undef, i32 %E83
%Cmp3114 = icmp ne i32 %Sl2391, undef
br i1 %Cmp3114, label %C, label %G
G:
ret void
}