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llvm-project/llvm/test/CodeGen/X86/lsr-nonaffine.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 -asm-verbose=false -mtriple=x86_64-apple-darwin -o - < %s | FileCheck %s
Fix normalization and de-normalization of non-affine SCEVs. llvm-svn: 105480
2010-06-05 03:16:34 +08:00
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
; LSR should leave non-affine expressions alone because it currently
; doesn't know how to do anything with them, and when it tries, it
; gets SCEVExpander's current expansion for them, which is suboptimal.
Fix normalization and de-normalization of non-affine SCEVs. llvm-svn: 105480
2010-06-05 03:16:34 +08:00
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
; CHECK: xorl %eax, %eax
; CHECK-NEXT: align
; CHECK-NEXT: BB0_1:
Revert r134366 and add an explicit triple to make this test host-independent. llvm-svn: 134447
2011-07-06 06:09:19 +08:00
; CHECK-NEXT: movq %rax, (%rdx)
; CHECK-NEXT: addq %rsi, %rax
; CHECK-NEXT: cmpq %rdi, %rax
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
; CHECK-NEXT: jl
; CHECK-NEXT: imulq %rax, %rax
; CHECK-NEXT: ret
define i64 @foo(i64 %n, i64 %s, i64* %p) nounwind {
entry:
br label %loop
Fix normalization and de-normalization of non-affine SCEVs. llvm-svn: 105480
2010-06-05 03:16:34 +08:00
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
loop:
%i = phi i64 [ 0, %entry ], [ %i.next, %loop ]
Upgrade syntax of tests using volatile instructions to use 'load volatile' instead of 'volatile load', which is archaic. llvm-svn: 145171
2011-11-27 14:54:59 +08:00
store volatile i64 %i, i64* %p
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
%i.next = add i64 %i, %s
%c = icmp slt i64 %i.next, %n
br i1 %c, label %loop, label %exit
Fix normalization and de-normalization of non-affine SCEVs. llvm-svn: 105480
2010-06-05 03:16:34 +08:00
Teach IVUsers to stop at non-affine expressions unless they are both outside the loop and reducible. This more completely hides them from LSR, which isn't usually able to do anything meaningful with non-affine expressions anyway, and this consequently hides them from SCEVExpander, which is acutely unprepared for non-affine expressions. Replace test/CodeGen/X86/lsr-nonaffine.ll with a new test that tests the new behavior. This works around the bug in PR10117 / rdar://problem/9633149, and is generally an improvement besides. llvm-svn: 134268
2011-07-02 06:05:19 +08:00
exit:
%mul = mul i64 %i.next, %i.next
ret i64 %mul
Fix normalization and de-normalization of non-affine SCEVs. llvm-svn: 105480
2010-06-05 03:16:34 +08:00
}