113 lines
2.8 KiB
LLVM
113 lines
2.8 KiB
LLVM
; RUN: opt -correlated-propagation -S < %s | FileCheck %s
|
|
|
|
declare void @llvm.experimental.guard(i1,...)
|
|
|
|
define i1 @test1(i32 %a) {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK: %alive = icmp eq i32 %a, 8
|
|
; CHECK-NEXT: %result = or i1 false, %alive
|
|
%cmp = icmp ult i32 %a, 16
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
|
|
%dead = icmp eq i32 %a, 16
|
|
%alive = icmp eq i32 %a, 8
|
|
%result = or i1 %dead, %alive
|
|
ret i1 %result
|
|
}
|
|
|
|
define i1 @test2(i32 %a) {
|
|
; CHECK-LABEL: @test2(
|
|
; CHECK: continue:
|
|
; CHECK-NEXT: %alive = icmp eq i32 %a, 8
|
|
; CHECK-NEXT: %result = or i1 false, %alive
|
|
%cmp = icmp ult i32 %a, 16
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
|
|
br label %continue
|
|
|
|
continue:
|
|
%dead = icmp eq i32 %a, 16
|
|
%alive = icmp eq i32 %a, 8
|
|
%result = or i1 %dead, %alive
|
|
ret i1 %result
|
|
}
|
|
|
|
define i1 @test3(i32 %a, i1 %flag) {
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK: continue:
|
|
; CHECK-NEXT: %alive.1 = icmp eq i32 %a, 16
|
|
; CHECK-NEXT: %alive.2 = icmp eq i32 %a, 8
|
|
; CHECK-NEXT: %result = or i1 %alive.1, %alive.2
|
|
br i1 %flag, label %true, label %false
|
|
|
|
true:
|
|
%cmp = icmp ult i32 %a, 16
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
|
|
br label %continue
|
|
|
|
false:
|
|
br label %continue
|
|
|
|
continue:
|
|
%alive.1 = icmp eq i32 %a, 16
|
|
%alive.2 = icmp eq i32 %a, 8
|
|
%result = or i1 %alive.1, %alive.2
|
|
ret i1 %result
|
|
}
|
|
|
|
define i1 @test4(i32 %a, i1 %flag) {
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK: continue:
|
|
; CHECK-NEXT: %alive = icmp eq i32 %a, 12
|
|
; CHECK-NEXT: %result = or i1 false, %alive
|
|
br i1 %flag, label %true, label %false
|
|
|
|
true:
|
|
%cmp.t = icmp ult i32 %a, 16
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp.t) [ "deopt"() ]
|
|
br label %continue
|
|
|
|
false:
|
|
%cmp.f = icmp ult i32 %a, 12
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp.f) [ "deopt"() ]
|
|
br label %continue
|
|
|
|
continue:
|
|
%dead = icmp eq i32 %a, 16
|
|
%alive = icmp eq i32 %a, 12
|
|
%result = or i1 %dead, %alive
|
|
ret i1 %result
|
|
}
|
|
|
|
define i1 @test5(i32 %a) {
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK: continue:
|
|
; CHECK-NEXT: %alive = icmp eq i32 %a.plus.8, 16
|
|
; CHECK-NEXT: %result = or i1 false, %alive
|
|
%cmp = icmp ult i32 %a, 16
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
|
|
%a.plus.8 = add i32 %a, 8
|
|
br label %continue
|
|
|
|
continue:
|
|
%dead = icmp eq i32 %a.plus.8, 24
|
|
%alive = icmp eq i32 %a.plus.8, 16
|
|
%result = or i1 %dead, %alive
|
|
ret i1 %result
|
|
}
|
|
|
|
; Check that we handle the case when the guard is the very first instruction in
|
|
; a basic block.
|
|
define i1 @test6(i32 %a) {
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK: %alive = icmp eq i32 %a, 8
|
|
; CHECK-NEXT: %result = or i1 false, %alive
|
|
%cmp = icmp ult i32 %a, 16
|
|
br label %continue
|
|
|
|
continue:
|
|
call void(i1,...) @llvm.experimental.guard(i1 %cmp) [ "deopt"() ]
|
|
%dead = icmp eq i32 %a, 16
|
|
%alive = icmp eq i32 %a, 8
|
|
%result = or i1 %dead, %alive
|
|
ret i1 %result
|
|
}
|