mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 06:09:05 +00:00
8829cec25f
forced constant is changed to a constant, we would end up adding the instruction to the wrong worklist, preventing it from being properly revisited. This fixes rdar://7832370 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100837 91177308-0d34-0410-b5e6-96231b3b80d8
96 lines
4.2 KiB
LLVM
96 lines
4.2 KiB
LLVM
; RUN: opt %s -sccp -S | FileCheck %s
|
|
; rdar://7832370
|
|
; Check that lots of stuff doesn't get turned into undef.
|
|
|
|
define i32 @main() nounwind readnone ssp {
|
|
init:
|
|
br label %control.outer.outer
|
|
|
|
control.outer.loopexit.us-lcssa: ; preds = %control
|
|
br label %control.outer.loopexit
|
|
|
|
control.outer.loopexit: ; preds = %control.outer.loopexit.us-lcssa.us, %control.outer.loopexit.us-lcssa
|
|
br label %control.outer.outer.backedge
|
|
|
|
control.outer.outer: ; preds = %control.outer.outer.backedge, %init
|
|
%switchCond.0.ph.ph = phi i32 [ 2, %init ], [ 3, %control.outer.outer.backedge ] ; <i32> [#uses=2]
|
|
%i.0.ph.ph = phi i32 [ undef, %init ], [ %i.0.ph.ph.be, %control.outer.outer.backedge ] ; <i32> [#uses=1]
|
|
%tmp4 = icmp eq i32 %i.0.ph.ph, 0 ; <i1> [#uses=1]
|
|
br i1 %tmp4, label %control.outer.outer.split.us, label %control.outer.outer.control.outer.outer.split_crit_edge
|
|
|
|
control.outer.outer.control.outer.outer.split_crit_edge: ; preds = %control.outer.outer
|
|
br label %control.outer
|
|
|
|
control.outer.outer.split.us: ; preds = %control.outer.outer
|
|
br label %control.outer.us
|
|
|
|
control.outer.us: ; preds = %bb3.us, %control.outer.outer.split.us
|
|
%A.0.ph.us = phi i32 [ %switchCond.0.us, %bb3.us ], [ 4, %control.outer.outer.split.us ] ; <i32> [#uses=2]
|
|
%switchCond.0.ph.us = phi i32 [ %A.0.ph.us, %bb3.us ], [ %switchCond.0.ph.ph, %control.outer.outer.split.us ] ; <i32> [#uses=1]
|
|
br label %control.us
|
|
|
|
bb3.us: ; preds = %control.us
|
|
br label %control.outer.us
|
|
|
|
bb0.us: ; preds = %control.us
|
|
br label %control.us
|
|
|
|
; CHECK: control.us: ; preds = %bb0.us, %control.outer.us
|
|
; CHECK-NEXT: %switchCond.0.us = phi i32
|
|
; CHECK-NEXT: switch i32 %switchCond.0.us
|
|
control.us: ; preds = %bb0.us, %control.outer.us
|
|
%switchCond.0.us = phi i32 [ %A.0.ph.us, %bb0.us ], [ %switchCond.0.ph.us, %control.outer.us ] ; <i32> [#uses=2]
|
|
switch i32 %switchCond.0.us, label %control.outer.loopexit.us-lcssa.us [
|
|
i32 0, label %bb0.us
|
|
i32 1, label %bb1.us-lcssa.us
|
|
i32 3, label %bb3.us
|
|
i32 4, label %bb4.us-lcssa.us
|
|
]
|
|
|
|
control.outer.loopexit.us-lcssa.us: ; preds = %control.us
|
|
br label %control.outer.loopexit
|
|
|
|
bb1.us-lcssa.us: ; preds = %control.us
|
|
br label %bb1
|
|
|
|
bb4.us-lcssa.us: ; preds = %control.us
|
|
br label %bb4
|
|
|
|
control.outer: ; preds = %bb3, %control.outer.outer.control.outer.outer.split_crit_edge
|
|
%A.0.ph = phi i32 [ %nextId17, %bb3 ], [ 4, %control.outer.outer.control.outer.outer.split_crit_edge ] ; <i32> [#uses=1]
|
|
%switchCond.0.ph = phi i32 [ 0, %bb3 ], [ %switchCond.0.ph.ph, %control.outer.outer.control.outer.outer.split_crit_edge ] ; <i32> [#uses=1]
|
|
br label %control
|
|
|
|
control: ; preds = %bb0, %control.outer
|
|
%switchCond.0 = phi i32 [ %A.0.ph, %bb0 ], [ %switchCond.0.ph, %control.outer ] ; <i32> [#uses=2]
|
|
switch i32 %switchCond.0, label %control.outer.loopexit.us-lcssa [
|
|
i32 0, label %bb0
|
|
i32 1, label %bb1.us-lcssa
|
|
i32 3, label %bb3
|
|
i32 4, label %bb4.us-lcssa
|
|
]
|
|
|
|
bb4.us-lcssa: ; preds = %control
|
|
br label %bb4
|
|
|
|
bb4: ; preds = %bb4.us-lcssa, %bb4.us-lcssa.us
|
|
br label %control.outer.outer.backedge
|
|
|
|
control.outer.outer.backedge: ; preds = %bb4, %control.outer.loopexit
|
|
%i.0.ph.ph.be = phi i32 [ 1, %bb4 ], [ 0, %control.outer.loopexit ] ; <i32> [#uses=1]
|
|
br label %control.outer.outer
|
|
|
|
bb3: ; preds = %control
|
|
%nextId17 = add i32 %switchCond.0, -2 ; <i32> [#uses=1]
|
|
br label %control.outer
|
|
|
|
bb0: ; preds = %control
|
|
br label %control
|
|
|
|
bb1.us-lcssa: ; preds = %control
|
|
br label %bb1
|
|
|
|
bb1: ; preds = %bb1.us-lcssa, %bb1.us-lcssa.us
|
|
ret i32 0
|
|
}
|