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llvm-mirror/test/CodeGen/X86/mul-shift-reassoc.ll
Matthias Braun f7935a3f63 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 00:28:10 +00:00

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459 B
LLVM

; RUN: llc < %s -mtriple=i686-- | grep lea
; RUN: llc < %s -mtriple=i686-- | not grep add
define i32 @test(i32 %X, i32 %Y) {
; Push the shl through the mul to allow an LEA to be formed, instead
; of using a shift and add separately.
%tmp.2 = shl i32 %X, 1 ; <i32> [#uses=1]
%tmp.3 = mul i32 %tmp.2, %Y ; <i32> [#uses=1]
%tmp.5 = add i32 %tmp.3, %Y ; <i32> [#uses=1]
ret i32 %tmp.5
}