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llvm-mirror/test/CodeGen/X86/mul128_sext_loop.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

33 lines
1.0 KiB
LLVM

; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
define void @test(i64* nocapture %arr, i64 %arrsize, i64 %factor) nounwind uwtable {
%1 = icmp sgt i64 %arrsize, 0
br i1 %1, label %.lr.ph, label %._crit_edge
.lr.ph: ; preds = %0
%2 = sext i64 %factor to i128
br label %3
; <label>:3 ; preds = %3, %.lr.ph
; CHECK-NOT: mul
; CHECK: imulq
; CHECK-NOT: mul
%carry.02 = phi i128 [ 0, %.lr.ph ], [ %10, %3 ]
%i.01 = phi i64 [ 0, %.lr.ph ], [ %11, %3 ]
%4 = getelementptr inbounds i64, i64* %arr, i64 %i.01
%5 = load i64, i64* %4, align 8
%6 = sext i64 %5 to i128
%7 = mul nsw i128 %6, %2
%8 = add nsw i128 %7, %carry.02
%.tr = trunc i128 %8 to i64
%9 = and i64 %.tr, 9223372036854775807
store i64 %9, i64* %4, align 8
%10 = ashr i128 %8, 63
%11 = add nsw i64 %i.01, 1
%exitcond = icmp eq i64 %11, %arrsize
br i1 %exitcond, label %._crit_edge, label %3
._crit_edge: ; preds = %3, %0
ret void
}