c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
73 lines
4.7 KiB
LLVM
73 lines
4.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py
|
|
; RUN: opt < %s -S -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
|
|
|
|
; Reduced from test-suite/MultiSource/Benchmarks/MiBench/office-ispell/correct.c
|
|
; getelementptr, obviously, takes pointer as it's base, and returns a pointer.
|
|
; SCEV operands are sorted in hope that it increases folding potential,
|
|
; and at the same time SCEVAddExpr's type is the type of the last(!) operand.
|
|
; Which means, in some exceedingly rare cases, pointer operand may happen to
|
|
; end up not being the last operand, and as a result SCEV for GEP will suddenly
|
|
; have a non-pointer return type. We should ensure that does not happen.
|
|
|
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@c = dso_local local_unnamed_addr global ptr null, align 8
|
|
@a = dso_local local_unnamed_addr global i32 0, align 4
|
|
@b = dso_local global [1 x i32] zeroinitializer, align 4
|
|
|
|
define i32 @d(i32 %base) {
|
|
; CHECK-LABEL: 'd'
|
|
; CHECK-NEXT: Classifying expressions for: @d
|
|
; CHECK-NEXT: %e = alloca [1 x [1 x i8]], align 1
|
|
; CHECK-NEXT: --> %e U: full-set S: full-set
|
|
; CHECK-NEXT: %f.0 = phi i32 [ %base, %entry ], [ %inc, %for.cond ]
|
|
; CHECK-NEXT: --> {%base,+,1}<nsw><%for.cond> U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %idxprom = sext i32 %f.0 to i64
|
|
; CHECK-NEXT: --> {(sext i32 %base to i64),+,1}<nsw><%for.cond> U: [-2147483648,-9223372036854775808) S: [-2147483648,-9223372036854775808) Exits: <<Unknown>> LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %arrayidx = getelementptr inbounds [1 x [1 x i8]], ptr %e, i64 0, i64 %idxprom
|
|
; CHECK-NEXT: --> {((sext i32 %base to i64) + %e),+,1}<nw><%for.cond> U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: %load1 = load ptr, ptr @c, align 8
|
|
; CHECK-NEXT: --> %load1 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %sub.ptr.lhs.cast = ptrtoint ptr %load1 to i64
|
|
; CHECK-NEXT: --> (ptrtoint ptr %load1 to i64) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, ptrtoint (ptr @b to i64)
|
|
; CHECK-NEXT: --> ((-1 * (ptrtoint ptr @b to i64)) + (ptrtoint ptr %load1 to i64)) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %sub.ptr.div = sdiv exact i64 %sub.ptr.sub, 4
|
|
; CHECK-NEXT: --> %sub.ptr.div U: [-2305843009213693952,2305843009213693952) S: [-2305843009213693952,2305843009213693952) Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %arrayidx1 = getelementptr inbounds [1 x i8], ptr %arrayidx, i64 0, i64 %sub.ptr.div
|
|
; CHECK-NEXT: --> ({((sext i32 %base to i64) + %e),+,1}<nw><%for.cond> + %sub.ptr.div) U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %load2 = load i8, ptr %arrayidx1, align 1
|
|
; CHECK-NEXT: --> %load2 U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %conv = sext i8 %load2 to i32
|
|
; CHECK-NEXT: --> (sext i8 %load2 to i32) U: [-128,128) S: [-128,128) Exits: <<Unknown>> LoopDispositions: { %for.cond: Variant }
|
|
; CHECK-NEXT: %inc = add nsw i32 %f.0, 1
|
|
; CHECK-NEXT: --> {(1 + %base),+,1}<nw><%for.cond> U: full-set S: full-set Exits: <<Unknown>> LoopDispositions: { %for.cond: Computable }
|
|
; CHECK-NEXT: Determining loop execution counts for: @d
|
|
; CHECK-NEXT: Loop %for.cond: <multiple exits> Unpredictable backedge-taken count.
|
|
; CHECK-NEXT: Loop %for.cond: Unpredictable constant max backedge-taken count.
|
|
; CHECK-NEXT: Loop %for.cond: Unpredictable symbolic max backedge-taken count.
|
|
;
|
|
entry:
|
|
%e = alloca [1 x [1 x i8]], align 1
|
|
call void @llvm.lifetime.start.p0(ptr %e) #2
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %for.cond, %entry
|
|
%f.0 = phi i32 [ %base, %entry ], [ %inc, %for.cond ]
|
|
%idxprom = sext i32 %f.0 to i64
|
|
%arrayidx = getelementptr inbounds [1 x [1 x i8]], ptr %e, i64 0, i64 %idxprom
|
|
%load1 = load ptr, ptr @c, align 8
|
|
%sub.ptr.lhs.cast = ptrtoint ptr %load1 to i64
|
|
%sub.ptr.sub = sub i64 %sub.ptr.lhs.cast, ptrtoint (ptr @b to i64)
|
|
%sub.ptr.div = sdiv exact i64 %sub.ptr.sub, 4
|
|
%arrayidx1 = getelementptr inbounds [1 x i8], ptr %arrayidx, i64 0, i64 %sub.ptr.div
|
|
%load2 = load i8, ptr %arrayidx1, align 1
|
|
%conv = sext i8 %load2 to i32
|
|
store i32 %conv, ptr @a, align 4
|
|
%inc = add nsw i32 %f.0, 1
|
|
br label %for.cond
|
|
}
|
|
|
|
declare void @llvm.lifetime.start.p0(ptr nocapture)
|