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[MachineSink] Don't break ImplicitNulls Summary: This teaches MachineSink to not sink instructions that might break the implicit null check optimization that runs later. This should not affect frontends that do not use implicit null checks. Reviewers: aadg, reames, hfinkel, atrick Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D14632 llvm-svn: 258254
2016-01-20 08:06:14 +08:00
; RUN: llc -mtriple=x86_64-apple-macosx -O3 -enable-implicit-null-checks -o - < %s 2>&1 | FileCheck %s
declare void @throw0()
declare void @throw1()
define i1 @f(i8* %p0, i8* %p1) {
entry:
%c0 = icmp eq i8* %p0, null
br i1 %c0, label %throw0, label %continue0, !make.implicit !0
continue0:
%v0 = load i8, i8* %p0
%c1 = icmp eq i8* %p1, null
br i1 %c1, label %throw1, label %continue1, !make.implicit !0
continue1:
%v1 = load i8, i8* %p1
%v = icmp eq i8 %v0, %v1
ret i1 %v
throw0:
call void @throw0()
unreachable
throw1:
call void @throw1()
unreachable
}
[X86] Fix a bug in getMemOpBaseRegImmOfs Fix a crash in `getMemOpBaseRegImmOfs` that happens if the base of `MemOp` is a frame index memory operand. The fix is to have `getMemOpBaseRegImmOfs` bail out in such cases. We can possibly be more clever here, if needed. llvm-svn: 259456
2016-02-02 10:32:43 +08:00
declare void @foo()
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32, i32) nounwind readonly
; Check for a crash. The crash is not specific to statepoints, but
; gc.statpeoint is an easy way to generate a fill instruction in
; %continue0 (which causes the llc crash).
define i1 @g(i8 addrspace(1)* %p0, i8* %p1) gc "statepoint-example" {
entry:
%c0 = icmp eq i8 addrspace(1)* %p0, null
%tok = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0, i8 addrspace(1)* %p0)
%p0.relocated = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %tok, i32 7, i32 7) ; (%p0, %p0)
br i1 %c0, label %throw0, label %continue0, !make.implicit !0
continue0:
%c1 = icmp eq i8* %p1, null
br i1 %c1, label %throw1, label %continue1, !make.implicit !0
continue1:
%v0 = load i8, i8 addrspace(1)* %p0.relocated
%v1 = load i8, i8* %p1
%v = icmp eq i8 %v0, %v1
ret i1 %v
throw0:
call void @throw0()
unreachable
throw1:
call void @throw1()
unreachable
}
[MachineSink] Don't break ImplicitNulls Summary: This teaches MachineSink to not sink instructions that might break the implicit null check optimization that runs later. This should not affect frontends that do not use implicit null checks. Reviewers: aadg, reames, hfinkel, atrick Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D14632 llvm-svn: 258254
2016-01-20 08:06:14 +08:00
; Check that we have two implicit null checks in @f
; CHECK: __LLVM_FaultMaps:
; CHECK-NEXT: .byte 1
; CHECK-NEXT: .byte 0
; CHECK-NEXT: .short 0
[X86]: Quit promoting 8 and 16 bit compares to 32 bit. Differential Revision: http://reviews.llvm.org/D21144 llvm-svn: 272801
2016-06-16 00:37:46 +08:00
; CHECK-NEXT: .long 1
[MachineSink] Don't break ImplicitNulls Summary: This teaches MachineSink to not sink instructions that might break the implicit null check optimization that runs later. This should not affect frontends that do not use implicit null checks. Reviewers: aadg, reames, hfinkel, atrick Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D14632 llvm-svn: 258254
2016-01-20 08:06:14 +08:00
; FunctionInfo[0] =
; FunctionAddress =
; CHECK-NEXT: .quad _f
; NumFaultingPCs =
; CHECK-NEXT: .long 2
; Reserved =
; CHECK-NEXT: .long 0
!0 = !{}