source: icGREP/icgrep-devel/llvm-3.8.0.src/test/Analysis/ScalarEvolution/sext-iv-0.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

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1; RUN: opt < %s -scalar-evolution -analyze | FileCheck %s
2
3; Convert (sext {-128,+,1}) to {sext(-128),+,sext(1)}, since the
4; trip count is within range where this is safe.
5
6target 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"
7target triple = "x86_64-unknown-linux-gnu"
8
9define void @foo(double* nocapture %x) nounwind {
10bb1.thread:
11        br label %bb1
12
13bb1:            ; preds = %bb1, %bb1.thread
14        %i.0.reg2mem.0 = phi i64 [ -128, %bb1.thread ], [ %8, %bb1 ]            ; <i64> [#uses=3]
15; CHECK: %i.0.reg2mem.0
16; CHECK-NEXT: -->  {-128,+,1}<%bb1>{{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 127
17        %0 = trunc i64 %i.0.reg2mem.0 to i8             ; <i8> [#uses=1]
18; CHECK: %0
19; CHECK-NEXT: -->  {-128,+,1}<%bb1>{{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 127
20        %1 = trunc i64 %i.0.reg2mem.0 to i9             ; <i8> [#uses=1]
21; CHECK: %1
22; CHECK-NEXT: -->  {-128,+,1}<%bb1>{{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 127
23        %2 = sext i9 %1 to i64          ; <i64> [#uses=1]
24; CHECK: %2
25; CHECK-NEXT: -->  {-128,+,1}<nsw><%bb1>{{ U: [^ ]+ S: [^ ]+}}{{ *}}Exits: 127
26        %3 = getelementptr double, double* %x, i64 %2           ; <double*> [#uses=1]
27        %4 = load double, double* %3, align 8           ; <double> [#uses=1]
28        %5 = fmul double %4, 3.900000e+00               ; <double> [#uses=1]
29        %6 = sext i8 %0 to i64          ; <i64> [#uses=1]
30        %7 = getelementptr double, double* %x, i64 %6           ; <double*> [#uses=1]
31        store double %5, double* %7, align 8
32        %8 = add i64 %i.0.reg2mem.0, 1          ; <i64> [#uses=2]
33        %9 = icmp sgt i64 %8, 127               ; <i1> [#uses=1]
34        br i1 %9, label %return, label %bb1
35
36return:         ; preds = %bb1
37        ret void
38}
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