mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-18 10:31:57 +00:00
95 lines
2.6 KiB
LLVM
95 lines
2.6 KiB
LLVM
|
; RUN: opt -simplifycfg -S < %s | FileCheck %s
|
||
|
|
|
||
|
|
; This load is safe to speculate, as it's from a safe offset
|
||
|
|
; within an alloca.
|
||
|
|
|
||
|
|
; CHECK: @yes
|
||
|
|
; CHECK-NOT: br
|
||
|
|
|
||
|
|
define void @yes(i1 %c) nounwind {
|
||
|
|
entry:
|
||
|
|
%a = alloca [4 x i64*], align 8
|
||
|
|
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 3
|
||
|
|
call void @frob(i64** %__a.addr)
|
||
|
|
br i1 %c, label %if.then, label %if.end
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.end: ; preds = %entry
|
||
|
|
%tmp5 = load i64** %__a.addr, align 8
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.end, %if.then
|
||
|
|
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK: @no0
|
||
|
|
; CHECK: br i1 %c
|
||
|
|
|
||
|
|
define void @no0(i1 %c) nounwind {
|
||
|
|
entry:
|
||
|
|
%a = alloca [4 x i64*], align 8
|
||
|
|
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 4
|
||
|
|
call void @frob(i64** %__a.addr)
|
||
|
|
br i1 %c, label %if.then, label %if.end
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.end: ; preds = %entry
|
||
|
|
%tmp5 = load i64** %__a.addr, align 8
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.end, %if.then
|
||
|
|
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK: @no1
|
||
|
|
; CHECK: br i1 %c
|
||
|
|
|
||
|
|
define void @no1(i1 %c, i64 %n) nounwind {
|
||
|
|
entry:
|
||
|
|
%a = alloca [4 x i64*], align 8
|
||
|
|
%__a.addr = getelementptr [4 x i64*]* %a, i64 0, i64 %n
|
||
|
|
call void @frob(i64** %__a.addr)
|
||
|
|
br i1 %c, label %if.then, label %if.end
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.end: ; preds = %entry
|
||
|
|
%tmp5 = load i64** %__a.addr, align 8
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.end, %if.then
|
||
|
|
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
; CHECK: @no2
|
||
|
|
; CHECK: br i1 %c
|
||
|
|
|
||
|
|
define void @no2(i1 %c, i64 %n) nounwind {
|
||
|
|
entry:
|
||
|
|
%a = alloca [4 x i64*], align 8
|
||
|
|
%__a.addr = getelementptr [4 x i64*]* %a, i64 1, i64 0
|
||
|
|
call void @frob(i64** %__a.addr)
|
||
|
|
br i1 %c, label %if.then, label %if.end
|
||
|
|
|
||
|
|
if.then: ; preds = %entry
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
if.end: ; preds = %entry
|
||
|
|
%tmp5 = load i64** %__a.addr, align 8
|
||
|
|
br label %return
|
||
|
|
|
||
|
|
return: ; preds = %if.end, %if.then
|
||
|
|
%storemerge = phi i64* [ undef, %if.then ], [ %tmp5, %if.end ]
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @frob(i64** nocapture %p)
|