1 ; RUN: opt -instcombine -S < %s | FileCheck %s 2 3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32" 4 target triple = "i386-unknown-linux-gnu" 5 6 @g_92 = common global [2 x i32*] zeroinitializer, align 4 ; <[2 x i32*]*> [#uses=1] 7 @g_177 = constant i32** bitcast (i8* getelementptr (i8* bitcast ([2 x i32*]* @g_92 to i8*), i64 4) to i32**), align 4 ; <i32***> [#uses=1] 8 9 define i1 @PR6486() nounwind { 10 ; CHECK-LABEL: @PR6486( 11 %tmp = load i32*** @g_177 ; <i32**> [#uses=1] 12 %cmp = icmp ne i32** null, %tmp ; <i1> [#uses=1] 13 %conv = zext i1 %cmp to i32 ; <i32> [#uses=1] 14 %cmp1 = icmp sle i32 0, %conv ; <i1> [#uses=1] 15 ret i1 %cmp1 16 ; CHECK: ret i1 true 17 } 18 19 @d = common global i32 0, align 4 20 @a = common global [1 x i32] zeroinitializer, align 4 21 22 define i1 @PR16462_1() nounwind { 23 ; CHECK-LABEL: @PR16462_1( 24 ret i1 icmp sgt (i32 sext (i16 trunc (i32 select (i1 icmp eq (i32* getelementptr inbounds ([1 x i32]* @a, i32 0, i32 0), i32* @d), i32 0, i32 1) to i16) to i32), i32 65535) 25 ; CHECK: ret i1 false 26 } 27 28 define i1 @PR16462_2() nounwind { 29 ; CHECK-LABEL: @PR16462_2( 30 ret i1 icmp sgt (i32 sext (i16 trunc (i32 select (i1 icmp eq (i32* getelementptr inbounds ([1 x i32]* @a, i32 0, i32 0), i32* @d), i32 0, i32 1) to i16) to i32), i32 42) 31 ; CHECK: ret i1 false 32 } 33
