mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-10 17:29:44 +00:00
6a7770b7ae
This changes the SelectionDAG scheduling preference to source order. Soon, the SelectionDAG scheduler can be bypassed saving a nice chunk of compile time. Performance differences that result from this change are often a consequence of register coalescing. The register coalescer is far from perfect. Bugs can be filed for deficiencies. On x86 SandyBridge/Haswell, the source order schedule is often preserved, particularly for small blocks. Register pressure is generally improved over the SD scheduler's ILP mode. However, we are still able to handle large blocks that require latency hiding, unlike the SD scheduler's BURR mode. MI scheduler also attempts to discover the critical path in single-block loops and adjust heuristics accordingly. The MI scheduler relies on the new machine model. This is currently unimplemented for AVX, so we may not be generating the best code yet. Unit tests are updated so they don't depend on SD scheduling heuristics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192750 91177308-0d34-0410-b5e6-96231b3b80d8
534 lines
12 KiB
LLVM
534 lines
12 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-macosx -mcpu=penryn | FileCheck %s
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; PR3253
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; The register+memory form of the BT instruction should be usable on
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; pentium4, however it is currently disabled due to the register+memory
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; form having different semantics than the register+register form.
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; Test these patterns:
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; (X & (1 << N)) != 0 --> BT(X, N).
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; ((X >>u N) & 1) != 0 --> BT(X, N).
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; as well as several variations:
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; - The second form can use an arithmetic shift.
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; - Either form can use == instead of !=.
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; - Either form can compare with an operand of the &
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; instead of with 0.
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; - The comparison can be commuted (only cases where neither
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; operand is constant are included).
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; - The and can be commuted.
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define void @test2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: test2
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; CHECK: btl %eax, %ecx
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; CHECK: jb
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @test2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: test2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @atest2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: atest2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @atest2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: atest2b
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; CHECK: btl %e{{..}}, %e{{..}}
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @test3(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: test3
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @test3b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: test3b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %x, %tmp29
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%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @testne2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: testne2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @testne2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: testne2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @atestne2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: atestne2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @atestne2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: atestne2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @testne3(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: testne3
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @testne3b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: testne3b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %x, %tmp29
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%tmp4 = icmp ne i32 %tmp3, 0 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp eq i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @aquery2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: aquery2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @aquery2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: aquery2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp eq i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query3(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query3
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp3, %tmp29 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query3b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query3b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %x, %tmp29
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%tmp4 = icmp eq i32 %tmp3, %tmp29 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query3x(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query3x
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
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%tmp4 = icmp eq i32 %tmp29, %tmp3 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @query3bx(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: query3bx
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jae
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %x, %tmp29
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%tmp4 = icmp eq i32 %tmp29, %tmp3 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @queryne2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: queryne2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @queryne2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: queryne2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp ne i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @aqueryne2(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: aqueryne2
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @aqueryne2b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: aqueryne2b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = ashr i32 %x, %n ; <i32> [#uses=1]
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%tmp3 = and i32 1, %tmp29
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%tmp4 = icmp ne i32 %tmp3, 1 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @queryne3(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: queryne3
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
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%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
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%tmp4 = icmp ne i32 %tmp3, %tmp29 ; <i1> [#uses=1]
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br i1 %tmp4, label %bb, label %UnifiedReturnBlock
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bb: ; preds = %entry
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call void @foo()
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ret void
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UnifiedReturnBlock: ; preds = %entry
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ret void
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}
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define void @queryne3b(i32 %x, i32 %n) nounwind {
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entry:
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; CHECK: queryne3b
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; CHECK: btl %e{{..}}, %e{{..}}
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; CHECK: jb
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%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
|
|
%tmp3 = and i32 %x, %tmp29
|
|
%tmp4 = icmp ne i32 %tmp3, %tmp29 ; <i1> [#uses=1]
|
|
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
|
|
|
|
bb: ; preds = %entry
|
|
call void @foo()
|
|
ret void
|
|
|
|
UnifiedReturnBlock: ; preds = %entry
|
|
ret void
|
|
}
|
|
|
|
define void @queryne3x(i32 %x, i32 %n) nounwind {
|
|
entry:
|
|
; CHECK: queryne3x
|
|
; CHECK: btl %e{{..}}, %e{{..}}
|
|
; CHECK: jb
|
|
%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
|
|
%tmp3 = and i32 %tmp29, %x ; <i32> [#uses=1]
|
|
%tmp4 = icmp ne i32 %tmp29, %tmp3 ; <i1> [#uses=1]
|
|
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
|
|
|
|
bb: ; preds = %entry
|
|
call void @foo()
|
|
ret void
|
|
|
|
UnifiedReturnBlock: ; preds = %entry
|
|
ret void
|
|
}
|
|
|
|
define void @queryne3bx(i32 %x, i32 %n) nounwind {
|
|
entry:
|
|
; CHECK: queryne3bx
|
|
; CHECK: btl %e{{..}}, %e{{..}}
|
|
; CHECK: jb
|
|
%tmp29 = shl i32 1, %n ; <i32> [#uses=1]
|
|
%tmp3 = and i32 %x, %tmp29
|
|
%tmp4 = icmp ne i32 %tmp29, %tmp3 ; <i1> [#uses=1]
|
|
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
|
|
|
|
bb: ; preds = %entry
|
|
call void @foo()
|
|
ret void
|
|
|
|
UnifiedReturnBlock: ; preds = %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @foo()
|
|
|
|
define zeroext i1 @invert(i32 %flags, i32 %flag) nounwind {
|
|
; CHECK: btl
|
|
entry:
|
|
%neg = xor i32 %flags, -1
|
|
%shl = shl i32 1, %flag
|
|
%and = and i32 %shl, %neg
|
|
%tobool = icmp ne i32 %and, 0
|
|
ret i1 %tobool
|
|
}
|