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 6 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" 7 target triple = "x86_64-unknown-linux-gnu" 8 9 define void @foo(double* nocapture %x) nounwind { 10 bb1.thread: 11 br label %bb1 12 13 bb1: ; 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> Exits: 127 17 %0 = trunc i64 %i.0.reg2mem.0 to i8 ; <i8> [#uses=1] 18 ; CHECK: %0 19 ; CHECK-NEXT: --> {-128,+,1}<%bb1> Exits: 127 20 %1 = trunc i64 %i.0.reg2mem.0 to i9 ; <i8> [#uses=1] 21 ; CHECK: %1 22 ; CHECK-NEXT: --> {-128,+,1}<%bb1> Exits: 127 23 %2 = sext i9 %1 to i64 ; <i64> [#uses=1] 24 ; CHECK: %2 25 ; CHECK-NEXT: --> {-128,+,1}<nsw><%bb1> Exits: 127 26 %3 = getelementptr double* %x, i64 %2 ; <double*> [#uses=1] 27 %4 = load 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* %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 36 return: ; preds = %bb1 37 ret void 38 } 39
