forked from OSchip/llvm-project
145 lines
4.9 KiB
LLVM
145 lines
4.9 KiB
LLVM
; RUN: llc < %s | FileCheck %s
|
|
|
|
; Based on this code:
|
|
;
|
|
; extern "C" int array[4];
|
|
; extern "C" void global_array(int idx1, int idx2, int idx3) {
|
|
; try {
|
|
; array[idx1] = 111;
|
|
; throw;
|
|
; } catch (...) {
|
|
; array[idx2] = 222;
|
|
; }
|
|
; array[idx3] = 333;
|
|
; }
|
|
; extern "C" __declspec(dllimport) int imported;
|
|
; extern "C" void access_imported() {
|
|
; try {
|
|
; imported = 111;
|
|
; throw;
|
|
; } catch (...) {
|
|
; imported = 222;
|
|
; }
|
|
; imported = 333;
|
|
; }
|
|
|
|
target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-pc-windows-msvc18.0.0"
|
|
|
|
%eh.ThrowInfo = type { i32, i32, i32, i32 }
|
|
|
|
@array = external global [4 x i32], align 16
|
|
@imported = external dllimport global i32, align 4
|
|
|
|
; Function Attrs: uwtable
|
|
define void @global_array(i32 %idx1, i32 %idx2, i32 %idx3) #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
|
|
entry:
|
|
%idxprom = sext i32 %idx1 to i64
|
|
%arrayidx = getelementptr inbounds [4 x i32], [4 x i32]* @array, i64 0, i64 %idxprom
|
|
store i32 111, i32* %arrayidx, align 4, !tbaa !2
|
|
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #1
|
|
to label %unreachable unwind label %catch.dispatch
|
|
|
|
catch.dispatch: ; preds = %entry
|
|
%cs1 = catchswitch within none [label %catch] unwind to caller
|
|
|
|
catch: ; preds = %catch.dispatch
|
|
%0 = catchpad within %cs1 [i8* null, i32 64, i8* null]
|
|
%idxprom1 = sext i32 %idx2 to i64
|
|
%arrayidx2 = getelementptr inbounds [4 x i32], [4 x i32]* @array, i64 0, i64 %idxprom1
|
|
store i32 222, i32* %arrayidx2, align 4, !tbaa !2
|
|
catchret from %0 to label %try.cont
|
|
|
|
try.cont: ; preds = %catch
|
|
%idxprom3 = sext i32 %idx3 to i64
|
|
%arrayidx4 = getelementptr inbounds [4 x i32], [4 x i32]* @array, i64 0, i64 %idxprom3
|
|
store i32 333, i32* %arrayidx4, align 4, !tbaa !2
|
|
ret void
|
|
|
|
unreachable: ; preds = %entry
|
|
unreachable
|
|
}
|
|
|
|
; CHECK-LABEL: global_array: # @global_array
|
|
; CHECK: pushq %rbp
|
|
; First array access
|
|
; CHECK: movslq %ecx, %[[idx:[^ ]*]]
|
|
; CHECK: leaq array(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $111, (%[[base]],%[[idx]],4)
|
|
; Might throw an exception and return to below...
|
|
; CHECK: callq _CxxThrowException
|
|
; Third array access must remat the address of array
|
|
; CHECK: movslq {{.*}}, %[[idx:[^ ]*]]
|
|
; CHECK: leaq array(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $333, (%[[base]],%[[idx]],4)
|
|
; CHECK: popq %rbp
|
|
; CHECK: retq
|
|
|
|
; CHECK: "?catch${{[0-9]+}}@?0?global_array@4HA":
|
|
; CHECK: pushq %rbp
|
|
; CHECK: movslq {{.*}}, %[[idx:[^ ]*]]
|
|
; CHECK: leaq array(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $222, (%[[base]],%[[idx]],4)
|
|
; CHECK: popq %rbp
|
|
; CHECK: retq # CATCHRET
|
|
|
|
declare void @_CxxThrowException(i8*, %eh.ThrowInfo*)
|
|
|
|
declare i32 @__CxxFrameHandler3(...)
|
|
|
|
; Function Attrs: uwtable
|
|
define void @access_imported() #0 personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
|
|
entry:
|
|
store i32 111, i32* @imported, align 4, !tbaa !2
|
|
invoke void @_CxxThrowException(i8* null, %eh.ThrowInfo* null) #1
|
|
to label %unreachable unwind label %catch.dispatch
|
|
|
|
catch.dispatch: ; preds = %entry
|
|
%cs1 = catchswitch within none [label %catch] unwind to caller
|
|
|
|
catch: ; preds = %catch.dispatch
|
|
%0 = catchpad within %cs1 [i8* null, i32 64, i8* null]
|
|
store i32 222, i32* @imported, align 4, !tbaa !2
|
|
catchret from %0 to label %try.cont
|
|
|
|
try.cont: ; preds = %catch
|
|
store i32 333, i32* @imported, align 4, !tbaa !2
|
|
ret void
|
|
|
|
unreachable: ; preds = %entry
|
|
unreachable
|
|
}
|
|
|
|
; CHECK-LABEL: access_imported: # @access_imported
|
|
; CHECK: pushq %rbp
|
|
; CHECK: movq __imp_imported(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $111, (%[[base]])
|
|
; Might throw an exception and return to below...
|
|
; CHECK: callq _CxxThrowException
|
|
; Third access must reload the address of imported
|
|
; CHECK: movq __imp_imported(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $333, (%[[base]])
|
|
; CHECK: popq %rbp
|
|
; CHECK: retq
|
|
|
|
; CHECK: "?catch${{[0-9]+}}@?0?access_imported@4HA":
|
|
; CHECK: pushq %rbp
|
|
; CHECK: movq __imp_imported(%rip), %[[base:[^ ]*]]
|
|
; CHECK: movl $222, (%[[base]])
|
|
; CHECK: popq %rbp
|
|
; CHECK: retq # CATCHRET
|
|
|
|
|
|
attributes #0 = { uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
|
|
attributes #1 = { noreturn }
|
|
|
|
!llvm.module.flags = !{!0}
|
|
!llvm.ident = !{!1}
|
|
|
|
!0 = !{i32 1, !"PIC Level", i32 2}
|
|
!1 = !{!"clang version 3.8.0 "}
|
|
!2 = !{!3, !3, i64 0}
|
|
!3 = !{!"int", !4, i64 0}
|
|
!4 = !{!"omnipotent char", !5, i64 0}
|
|
!5 = !{!"Simple C/C++ TBAA"}
|