mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-21 00:32:23 +00:00
f056838956
I still think that LVI should be handling this, but that capability is some ways off in the future, and this matters for some significant benchmarks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122378 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.1 KiB
LLVM
55 lines
1.1 KiB
LLVM
; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
|
|
|
|
@a = external global i32 ; <i32*> [#uses=7]
|
|
|
|
; CHECK: @foo
|
|
define i32 @foo() nounwind {
|
|
entry:
|
|
%0 = load i32* @a, align 4
|
|
%1 = icmp eq i32 %0, 4
|
|
br i1 %1, label %bb, label %bb1
|
|
|
|
bb: ; preds = %entry
|
|
br label %bb8
|
|
|
|
bb1: ; preds = %entry
|
|
%2 = load i32* @a, align 4
|
|
%3 = icmp eq i32 %2, 5
|
|
br i1 %3, label %bb2, label %bb3
|
|
|
|
bb2: ; preds = %bb1
|
|
br label %bb8
|
|
|
|
bb3: ; preds = %bb1
|
|
%4 = load i32* @a, align 4
|
|
%5 = icmp eq i32 %4, 4
|
|
; CHECK: br i1 false, label %bb4, label %bb5
|
|
br i1 %5, label %bb4, label %bb5
|
|
|
|
bb4: ; preds = %bb3
|
|
%6 = load i32* @a, align 4
|
|
%7 = add i32 %6, 5
|
|
br label %bb8
|
|
|
|
bb5: ; preds = %bb3
|
|
%8 = load i32* @a, align 4
|
|
%9 = icmp eq i32 %8, 5
|
|
; CHECK: br i1 false, label %bb6, label %bb7
|
|
br i1 %9, label %bb6, label %bb7
|
|
|
|
bb6: ; preds = %bb5
|
|
%10 = load i32* @a, align 4
|
|
%11 = add i32 %10, 4
|
|
br label %bb8
|
|
|
|
bb7: ; preds = %bb5
|
|
%12 = load i32* @a, align 4
|
|
br label %bb8
|
|
|
|
bb8: ; preds = %bb7, %bb6, %bb4, %bb2, %bb
|
|
%.0 = phi i32 [ %12, %bb7 ], [ %11, %bb6 ], [ %7, %bb4 ], [ 4, %bb2 ], [ 5, %bb ]
|
|
br label %return
|
|
|
|
return: ; preds = %bb8
|
|
ret i32 %.0
|
|
} |