68d2ce8e74
This patch replaces the delinearization function used in DA, switching from one that depends on type information in GEPs to one that does not. There are three types of changes in regression tests: improvements, degradations, and degradations but the related features will be removed. Since there were very few cases that are classified into the second category, I believe the impact of this change should be practically insignificant.
71 lines
2.9 KiB
LLVM
71 lines
2.9 KiB
LLVM
; REQUIRES: asserts
|
|
; RUN: opt -passes=loop-fusion -disable-output -stats < %s 2>&1 | FileCheck -check-prefix=STAT %s
|
|
; STAT: 1 loop-fusion - Loops fused
|
|
|
|
; XFAIL: *
|
|
; Currently fails since delinearization doesn't work as expected. The estimated
|
|
; array size is different for `Array[i][i]` and `Array[i][j]`. The former is
|
|
; now regarded as an access to a 1D array.
|
|
|
|
; C Code
|
|
;
|
|
;; for (int i = 0; i < 100; ++i)
|
|
;; Array[i][i] = -i;
|
|
;; for (int row = 0; row < 100; ++row)
|
|
;; for (int col = 0; col < 100; ++col)
|
|
;; if (col != row)
|
|
;; Array[row][col] = row + col;
|
|
;
|
|
; Loop fusion should not crash anymore as now forgetBlockAndLoopDispositions()
|
|
; is trigerred after mergeLatch() during the fusion.
|
|
|
|
define i32 @forget_dispositions() nounwind {
|
|
entry:
|
|
%Array = alloca [100 x [100 x i32]], align 4
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
%indvars.iv33 = phi i64 [ 0, %entry ], [ %indvars.iv.next34, %for.body ]
|
|
%0 = trunc i64 %indvars.iv33 to i32
|
|
%sub = sub i32 0, %0
|
|
%arrayidx2 = getelementptr inbounds [100 x [100 x i32]], ptr %Array, i64 0, i64 %indvars.iv33, i64 %indvars.iv33
|
|
store i32 %sub, ptr %arrayidx2, align 4
|
|
%indvars.iv.next34 = add i64 %indvars.iv33, 1
|
|
%lftr.wideiv35 = trunc i64 %indvars.iv.next34 to i32
|
|
%exitcond36 = icmp eq i32 %lftr.wideiv35, 100
|
|
br i1 %exitcond36, label %for.cond6.preheader, label %for.body
|
|
|
|
for.cond6.preheader: ; preds = %for.body, %for.inc17
|
|
%indvars.iv29 = phi i64 [ %indvars.iv.next30, %for.inc17 ], [ 0, %for.body ]
|
|
br label %for.body8
|
|
|
|
for.body8: ; preds = %for.inc14, %for.cond6.preheader
|
|
%indvars.iv = phi i64 [ 0, %for.cond6.preheader ], [ %indvars.iv.next, %for.inc14 ]
|
|
%1 = trunc i64 %indvars.iv to i32
|
|
%2 = trunc i64 %indvars.iv29 to i32
|
|
%cmp9 = icmp eq i32 %1, %2
|
|
br i1 %cmp9, label %for.inc14, label %if.then
|
|
|
|
if.then: ; preds = %for.body8
|
|
%3 = add i64 %indvars.iv, %indvars.iv29
|
|
%arrayidx13 = getelementptr inbounds [100 x [100 x i32]], ptr %Array, i64 0, i64 %indvars.iv29, i64 %indvars.iv
|
|
%4 = trunc i64 %3 to i32
|
|
store i32 %4, ptr %arrayidx13, align 4
|
|
br label %for.inc14
|
|
|
|
for.inc14: ; preds = %for.body8, %if.then
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
%lftr.wideiv27 = trunc i64 %indvars.iv.next to i32
|
|
%exitcond28 = icmp eq i32 %lftr.wideiv27, 100
|
|
br i1 %exitcond28, label %for.inc17, label %for.body8
|
|
|
|
for.inc17: ; preds = %for.inc14
|
|
%indvars.iv.next30 = add i64 %indvars.iv29, 1
|
|
%lftr.wideiv31 = trunc i64 %indvars.iv.next30 to i32
|
|
%exitcond32 = icmp eq i32 %lftr.wideiv31, 100
|
|
br i1 %exitcond32, label %for.exit, label %for.cond6.preheader
|
|
|
|
for.exit: ; preds = %for.inc17
|
|
ret i32 0
|
|
}
|