mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 12:12:47 +01:00
65 lines
2.9 KiB
LLVM
65 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -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.
|
|
|
|
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 {
|
|
; CHECK-LABEL: @test(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[CALL:%.*]] = tail call i32 (...) @Trace() #[[ATTR2:[0-9]+]]
|
|
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[CALL]], 0
|
|
; CHECK-NEXT: br i1 [[TOBOOL]], label [[WHILE_BODY:%.*]], label [[IF_THEN:%.*]]
|
|
; CHECK: if.then:
|
|
; CHECK-NEXT: [[CALL1:%.*]] = tail call i32 (...) @Trace() #[[ATTR2]]
|
|
; CHECK-NEXT: br label [[WHILE_BODY]]
|
|
; CHECK: while.body:
|
|
; CHECK-NEXT: [[ADDR_017:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ null, [[IF_THEN]] ], [ null, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: [[X_016:%.*]] = phi i8 [ [[INC:%.*]], [[WHILE_BODY]] ], [ 0, [[IF_THEN]] ], [ 0, [[ENTRY]] ]
|
|
; CHECK-NEXT: [[INC]] = add i8 [[X_016]], 1
|
|
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[ADDR_017]], i64 1
|
|
; CHECK-NEXT: store volatile i8 [[X_016]], i8* [[ADDR_017]], align 1
|
|
; CHECK-NEXT: [[TMP0:%.*]] = ptrtoint i8* [[INCDEC_PTR]] to i64
|
|
; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[TMP0]] to i32
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[TMP1]], 4096
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[WHILE_BODY]], label [[END:%.*]]
|
|
; CHECK: end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
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" "frame-pointer"="non-leaf" "relocation-model"="pic" "ssp-buffers-size"="8" }
|
|
attributes #1 = { "fp-contract-model"="standard" "frame-pointer"="non-leaf" "relocation-model"="pic" "ssp-buffers-size"="8" }
|
|
attributes #2 = { nounwind }
|
|
|
|
!0 = !{i32 1039}
|