67 lines
1.6 KiB
LLVM
67 lines
1.6 KiB
LLVM
; RUN: opt -S -consthoist < %s | FileCheck %s
|
|
target datalayout = "E-m:e-i64:64-n32:64"
|
|
target triple = "powerpc64-unknown-linux-gnu"
|
|
|
|
; Here the masks are all contiguous, and should not be hoisted.
|
|
define i32 @test1() nounwind {
|
|
entry:
|
|
; CHECK-LABEL: @test1
|
|
; CHECK-NOT: bitcast i32 65535 to i32
|
|
; CHECK: and i32 undef, 65535
|
|
%conv121 = and i32 undef, 65535
|
|
br i1 undef, label %if.then152, label %if.end167
|
|
|
|
if.then152:
|
|
; CHECK: and i32 undef, 65535
|
|
%conv153 = and i32 undef, 65535
|
|
br i1 undef, label %if.end167, label %end2
|
|
|
|
if.end167:
|
|
; CHECK: and i32 {{.*}}, 32768
|
|
%shl161 = shl nuw nsw i32 %conv121, 15
|
|
%0 = load i8, i8* undef, align 1
|
|
%conv169 = zext i8 %0 to i32
|
|
%shl170 = shl nuw nsw i32 %conv169, 7
|
|
%shl161.masked = and i32 %shl161, 32768
|
|
%conv174 = or i32 %shl170, %shl161.masked
|
|
%cmp178 = icmp ugt i32 %conv174, 32767
|
|
br i1 %cmp178, label %end1, label %end2
|
|
|
|
end1:
|
|
unreachable
|
|
|
|
end2:
|
|
unreachable
|
|
}
|
|
|
|
; Here the masks are not contiguous, and should be hoisted.
|
|
define i32 @test2() nounwind {
|
|
entry:
|
|
; CHECK-LABEL: @test2
|
|
; CHECK: bitcast i32 65531 to i32
|
|
%conv121 = and i32 undef, 65531
|
|
br i1 undef, label %if.then152, label %if.end167
|
|
|
|
if.then152:
|
|
%conv153 = and i32 undef, 65531
|
|
br i1 undef, label %if.end167, label %end2
|
|
|
|
if.end167:
|
|
; CHECK: add i32 {{.*}}, -32758
|
|
%shl161 = shl nuw nsw i32 %conv121, 15
|
|
%0 = load i8, i8* undef, align 1
|
|
%conv169 = zext i8 %0 to i32
|
|
%shl170 = shl nuw nsw i32 %conv169, 7
|
|
%shl161.masked = and i32 %shl161, 32773
|
|
%conv174 = or i32 %shl170, %shl161.masked
|
|
%cmp178 = icmp ugt i32 %conv174, 32767
|
|
br i1 %cmp178, label %end1, label %end2
|
|
|
|
end1:
|
|
unreachable
|
|
|
|
end2:
|
|
unreachable
|
|
}
|
|
|