-; RUN: opt < %s -instcombine -S > %t
-; RUN: not grep zext %t
-; RUN: not grep sext %t
+; RUN: opt < %s -instcombine -S | FileCheck %s
; Instcombine should be able to eliminate all of these ext casts.
declare void @use(i32)
-define i64 @foo(i64 %a) {
+define i64 @test1(i64 %a) {
%b = trunc i64 %a to i32
%c = and i32 %b, 15
%d = zext i32 %c to i64
call void @use(i32 %b)
ret i64 %d
+; CHECK: @test1
+; CHECK: %d = and i64 %a, 15
+; CHECK: ret i64 %d
}
-define i64 @bar(i64 %a) {
+define i64 @test2(i64 %a) {
%b = trunc i64 %a to i32
%c = shl i32 %b, 4
%q = ashr i32 %c, 4
%d = sext i32 %q to i64
call void @use(i32 %b)
ret i64 %d
+; CHECK: @test2
+; CHECK: shl i64 %a, 36
+; CHECK: %d = ashr i64 {{.*}}, 36
+; CHECK: ret i64 %d
}
-define i64 @goo(i64 %a) {
+define i64 @test3(i64 %a) {
%b = trunc i64 %a to i32
%c = and i32 %b, 8
%d = zext i32 %c to i64
call void @use(i32 %b)
ret i64 %d
+; CHECK: @test3
+; CHECK: %d = and i64 %a, 8
+; CHECK: ret i64 %d
}
-define i64 @hoo(i64 %a) {
+define i64 @test4(i64 %a) {
%b = trunc i64 %a to i32
%c = and i32 %b, 8
%x = xor i32 %c, 8
%d = zext i32 %x to i64
call void @use(i32 %b)
ret i64 %d
+; CHECK: @test4
+; CHECK: = and i64 %a, 8
+; CHECK: %d = xor i64 {{.*}}, 8
+; CHECK: ret i64 %d
}