1; RUN: opt < %s -constprop -die -S | FileCheck %s 2 3target 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-S128" 4target triple = "x86_64-apple-macosx10.7.2" 5 6; This is a basic sanity check for constant propagation. The add instruction 7; should be eliminated. 8define i32 @test1(i1 %B) { 9 br i1 %B, label %BB1, label %BB2 10 11BB1: 12 %Val = add i32 0, 0 13 br label %BB3 14 15BB2: 16 br label %BB3 17 18BB3: 19; CHECK-LABEL: @test1( 20; CHECK: %Ret = phi i32 [ 0, %BB1 ], [ 1, %BB2 ] 21 %Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ] 22 ret i32 %Ret 23} 24 25 26; PR6197 27define i1 @test2(i8* %f) nounwind { 28entry: 29 %V = icmp ne i8* blockaddress(@test2, %bb), null 30 br label %bb 31bb: 32 ret i1 %V 33 34; CHECK-LABEL: @test2( 35; CHECK: ret i1 true 36} 37 38define i1 @TNAN() { 39; CHECK-LABEL: @TNAN( 40; CHECK: ret i1 true 41 %A = fcmp uno double 0x7FF8000000000000, 1.000000e+00 42 %B = fcmp uno double 1.230000e+02, 1.000000e+00 43 %C = or i1 %A, %B 44 ret i1 %C 45} 46 47define i128 @vector_to_int_cast() { 48 %A = bitcast <4 x i32> <i32 1073741824, i32 1073741824, i32 1073741824, i32 1073741824> to i128 49 ret i128 %A 50; CHECK-LABEL: @vector_to_int_cast( 51; CHECK: ret i128 85070591750041656499021422275829170176 52} 53 54