1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
; RUN: opt < %s -indvars -S | FileCheck %s
; Test WidenIV::GetExtendedOperandRecurrence.
; add219 should be extended to i64 because it is nsw, even though its
; sext cannot be hoisted outside the loop.
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"
define void @test() nounwind {
entry:
br i1 undef, label %for.body11, label %for.end285
for.body11: ; preds = %entry
%shl = shl i32 1, 1
%shl132 = shl i32 %shl, 1
br label %for.body153
for.body153: ; preds = %for.body153, %for.body11
br i1 undef, label %for.body170, label %for.body153
; CHECK: add nsw i64 %indvars.iv, 1
for.body170: ; preds = %for.body170, %for.body153
%i2.19 = phi i32 [ %add249, %for.body170 ], [ 0, %for.body153 ]
%add219 = add nsw i32 %i2.19, 1
%idxprom220 = sext i32 %add219 to i64
%add249 = add nsw i32 %i2.19, %shl132
br label %for.body170
for.end285: ; preds = %entry
ret void
}
|
