Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/SimplifyCFG/volatile-phioper.ll

@@ -1,48 +0,0 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
-;
-; rdar:13349374
-;
-; SimplifyCFG should not eliminate blocks with volatile stores.
-; Essentially, volatile needs to be backdoor that tells the optimizer
-; it can no longer use language standard as an excuse. The compiler
-; needs to expose the volatile access to the platform.
-;
-; CHECK-LABEL: @test(
-; CHECK: entry:
-; CHECK: @Trace
-; CHECK: while.body:
-; CHECK: store volatile
-; CHECK: end:
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-
-define void @test(i8** nocapture %PeiServices) #0 {
-entry:
-  %call = tail call i32 (...) @Trace() #2
-  %tobool = icmp eq i32 %call, 0
-  br i1 %tobool, label %while.body, label %if.then
-
-if.then:                                          ; preds = %entry
-  %call1 = tail call i32 (...) @Trace() #2
-  br label %while.body
-
-while.body:                                       ; preds = %entry, %if.then, %while.body
-  %Addr.017 = phi i8* [ %incdec.ptr, %while.body ], [ null, %if.then ], [ null, %entry ]
-  %x.016 = phi i8 [ %inc, %while.body ], [ 0, %if.then ], [ 0, %entry ]
-  %inc = add i8 %x.016, 1
-  %incdec.ptr = getelementptr inbounds i8, i8* %Addr.017, i64 1
-  store volatile i8 %x.016, i8* %Addr.017, align 1
-  %0 = ptrtoint i8* %incdec.ptr to i64
-  %1 = trunc i64 %0 to i32
-  %cmp = icmp ult i32 %1, 4096
-  br i1 %cmp, label %while.body, label %end
-
-end:
-  ret void
-}
-declare i32 @Trace(...) #1
-
-attributes #0 = { nounwind ssp uwtable "fp-contract-model"="standard" "no-frame-pointer-elim" "no-frame-pointer-elim-non-leaf" "relocation-model"="pic" "ssp-buffers-size"="8" }
-attributes #1 = { "fp-contract-model"="standard" "no-frame-pointer-elim" "no-frame-pointer-elim-non-leaf" "relocation-model"="pic" "ssp-buffers-size"="8" }
-attributes #2 = { nounwind }
-
-!0 = !{i32 1039}