mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 00:12:50 +01:00
04249128ab
Also prevent the switch-to-icmp transform from creating identity adds, noticed by Marius Wachtler. llvm-svn: 125056
40 lines
801 B
LLVM
40 lines
801 B
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
|
|
|
|
define zeroext i1 @test1(i32 %x) nounwind readnone ssp noredzone {
|
|
entry:
|
|
switch i32 %x, label %lor.rhs [
|
|
i32 2, label %lor.end
|
|
i32 1, label %lor.end
|
|
i32 3, label %lor.end
|
|
]
|
|
|
|
lor.rhs:
|
|
br label %lor.end
|
|
|
|
lor.end:
|
|
%0 = phi i1 [ true, %entry ], [ false, %lor.rhs ], [ true, %entry ], [ true, %entry ]
|
|
ret i1 %0
|
|
|
|
; CHECK: @test1
|
|
; CHECK: %x.off = add i32 %x, -1
|
|
; CHECK: %switch = icmp ult i32 %x.off, 3
|
|
}
|
|
|
|
define zeroext i1 @test2(i32 %x) nounwind readnone ssp noredzone {
|
|
entry:
|
|
switch i32 %x, label %lor.rhs [
|
|
i32 0, label %lor.end
|
|
i32 1, label %lor.end
|
|
]
|
|
|
|
lor.rhs:
|
|
br label %lor.end
|
|
|
|
lor.end:
|
|
%0 = phi i1 [ true, %entry ], [ false, %lor.rhs ], [ true, %entry ]
|
|
ret i1 %0
|
|
|
|
; CHECK: @test2
|
|
; CHECK: %switch = icmp ult i32 %x, 2
|
|
}
|