testcase for i64 < 0

tests/cases/icmp64.ll

@@ -0,0 +1,32 @@
+; ModuleID = 'tests/hello_world.bc'
+target datalayout = "e-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-p:32:32:32-v128:32:128-n32-S128"
+target triple = "asmjs-unknown-emscripten"
+
+@.str = private unnamed_addr constant [17 x i8] c"hello, world %d\0A\00", align 1 ; [#uses=1 type=[15 x i8]*]
+
+; [#uses=0]
+define i32 @main() {
+entry:
+  %retval = alloca i32, align 4                   ; [#uses=1 type=i32*]
+  store i32 0, i32* %retval
+  %a0 = add i64 0, 0
+  %a1 = icmp slt i64 %a0, 0
+  %a2 = zext i1 %a1 to i32
+  %calla = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @.str, i32 0, i32 0), i32 %a2)
+  %b0 = add i64 0, 1
+  %b1 = icmp slt i64 %b0, 0
+  %b2 = zext i1 %b1 to i32
+  %callb = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @.str, i32 0, i32 0), i32 %b2)
+  %c0 = sub i64 1, 0
+  %c1 = icmp slt i64 %c0, 0
+  %c2 = zext i1 %c1 to i32
+  %callc = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @.str, i32 0, i32 0), i32 %c2)
+  %d0 = sub i64 0, 1
+  %d1 = icmp slt i64 %d0, 0
+  %d2 = zext i1 %d1 to i32
+  %calld = call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([17 x i8]* @.str, i32 0, i32 0), i32 %d2)
+  ret i32 1
+}
+
+; [#uses=1]
+declare i32 @printf(i8*, ...)

tests/cases/icmp64.txt

@@ -0,0 +1,4 @@
+hello, world 0
+hello, world 0
+hello, world 0
+hello, world 1